diff --git a/public/index.html b/public/index.html
index 6c4ad3587..9a0d94be7 100644
--- a/public/index.html
+++ b/public/index.html
@@ -38,6 +38,7 @@
     <script src="lib/jquery-cropper.min.js"></script>
     <script src="lib/toastr.min.js"></script>
     <script src="lib/fuse.js"></script>
+    <script src="lib/sortable.js"></script>
     <script src="lib/select2.min.js"></script>
     <script src="lib/select2-search-placeholder.js"></script>
     <script src="lib/seedrandom.min.js"></script>
diff --git a/public/lib/sortable.js b/public/lib/sortable.js
new file mode 100644
index 000000000..fefa0c71c
--- /dev/null
+++ b/public/lib/sortable.js
@@ -0,0 +1,2 @@
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o,i=this,r=i.el,a=i.options,l=r.ownerDocument;n&&!q&&n.parentNode===r&&(o=k(n),$=r,V=(q=n).parentNode,Q=q.nextSibling,J=n,at=a.group,st={target:Bt.dragged=q,clientX:(e||t).clientX,clientY:(e||t).clientY},ht=st.clientX-o.left,ft=st.clientY-o.top,this._lastX=(e||t).clientX,this._lastY=(e||t).clientY,q.style["will-change"]="all",o=function(){z("delayEnded",i,{evt:t}),Bt.eventCanceled?i._onDrop():(i._disableDelayedDragEvents(),!s&&i.nativeDraggable&&(q.draggable=!0),i._triggerDragStart(t,e),U({sortable:i,name:"choose",originalEvent:t}),I(q,a.chosenClass,!0))},a.ignore.split(",").forEach(function(t){b(q,t.trim(),jt)}),h(l,"dragover",Xt),h(l,"mousemove",Xt),h(l,"touchmove",Xt),h(l,"mouseup",i._onDrop),h(l,"touchend",i._onDrop),h(l,"touchcancel",i._onDrop),s&&this.nativeDraggable&&(this.options.touchStartThreshold=4,q.draggable=!0),z("delayStart",this,{evt:t}),!a.delay||a.delayOnTouchOnly&&!e||this.nativeDraggable&&(w||y)?o():Bt.eventCanceled?this._onDrop():(h(l,"mouseup",i._disableDelayedDrag),h(l,"touchend",i._disableDelayedDrag),h(l,"touchcancel",i._disableDelayedDrag),h(l,"mousemove",i._delayedDragTouchMoveHandler),h(l,"touchmove",i._delayedDragTouchMoveHandler),a.supportPointer&&h(l,"pointermove",i._delayedDragTouchMoveHandler),i._dragStartTimer=setTimeout(o,a.delay)))},_delayedDragTouchMoveHandler:function(t){t=t.touches?t.touches[0]:t;Math.max(Math.abs(t.clientX-this._lastX),Math.abs(t.clientY-this._lastY))>=Math.floor(this.options.touchStartThreshold/(this.nativeDraggable&&window.devicePixelRatio||1))&&this._disableDelayedDrag()},_disableDelayedDrag:function(){q&&jt(q),clearTimeout(this._dragStartTimer),this._disableDelayedDragEvents()},_disableDelayedDragEvents:function(){var 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e=this.options,n=e.fallbackTolerance,o=e.fallbackOffset,i=t.touches?t.touches[0]:t,r=Z&&v(Z,!0),a=Z&&r&&r.a,l=Z&&r&&r.d,e=Ot&&bt&&E(bt),a=(i.clientX-st.clientX+o.x)/(a||1)+(e?e[0]-_t[0]:0)/(a||1),l=(i.clientY-st.clientY+o.y)/(l||1)+(e?e[1]-_t[1]:0)/(l||1);if(!Bt.active&&!yt){if(n&&Math.max(Math.abs(i.clientX-this._lastX),Math.abs(i.clientY-this._lastY))<n)return;this._onDragStart(t,!0)}Z&&(r?(r.e+=a-(ut||0),r.f+=l-(dt||0)):r={a:1,b:0,c:0,d:1,e:a,f:l},r="matrix(".concat(r.a,",").concat(r.b,",").concat(r.c,",").concat(r.d,",").concat(r.e,",").concat(r.f,")"),P(Z,"webkitTransform",r),P(Z,"mozTransform",r),P(Z,"msTransform",r),P(Z,"transform",r),ut=a,dt=l,ct=i),t.cancelable&&t.preventDefault()}},_appendGhost:function(){if(!Z){var 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e=this.el,n=this.options;ot=B(q),rt=B(q,n.draggable),z("drop",this,{evt:t}),V=q&&q.parentNode,ot=B(q),rt=B(q,n.draggable),Bt.eventCanceled||(Dt=St=yt=!1,clearInterval(this._loopId),clearTimeout(this._dragStartTimer),Kt(this.cloneId),Kt(this._dragStartId),this.nativeDraggable&&(f(document,"drop",this),f(e,"dragstart",this._onDragStart)),this._offMoveEvents(),this._offUpEvents(),u&&P(document.body,"user-select",""),P(q,"transform",""),t&&(pt&&(t.cancelable&&t.preventDefault(),n.dropBubble||t.stopPropagation()),Z&&Z.parentNode&&Z.parentNode.removeChild(Z),($===V||lt&&"clone"!==lt.lastPutMode)&&tt&&tt.parentNode&&tt.parentNode.removeChild(tt),q&&(this.nativeDraggable&&f(q,"dragend",this),jt(q),q.style["will-change"]="",pt&&!yt&&I(q,(lt||this).options.ghostClass,!1),I(q,this.options.chosenClass,!1),U({sortable:this,name:"unchoose",toEl:V,newIndex:null,newDraggableIndex:null,originalEvent:t}),$!==V?(0<=ot&&(U({rootEl:V,name:"add",toEl:V,fromEl:$,originalEvent:t}),U({sortable:this,name:"remove",toEl:V,originalEvent:t}),U({rootEl:V,name:"sort",toEl:V,fromEl:$,originalEvent:t}),U({sortable:this,name:"sort",toEl:V,originalEvent:t})),lt&&lt.save()):ot!==nt&&0<=ot&&(U({sortable:this,name:"update",toEl:V,originalEvent:t}),U({sortable:this,name:"sort",toEl:V,originalEvent:t})),Bt.active&&(null!=ot&&-1!==ot||(ot=nt,rt=it),U({sortable:this,name:"end",toEl:V,originalEvent:t}),this.save())))),this._nulling()},_nulling:function(){z("nulling",this),$=q=V=Z=Q=tt=J=et=st=ct=pt=ot=rt=nt=it=gt=mt=lt=at=Bt.dragged=Bt.ghost=Bt.clone=Bt.active=null,Tt.forEach(function(t){t.checked=!0}),Tt.length=ut=dt=0},handleEvent:function(t){switch(t.type){case"drop":case"dragend":this._onDrop(t);break;case"dragenter":case"dragover":q&&(this._onDragOver(t),function(t){t.dataTransfer&&(t.dataTransfer.dropEffect="move");t.cancelable&&t.preventDefault()}(t));break;case"selectstart":t.preventDefault()}},toArray:function(){for(var t,e=[],n=this.el.children,o=0,i=n.length,r=this.options;o<i;o++)N(t=n[o],r.draggable,this.el,!1)&&e.push(t.getAttribute(r.dataIdAttr)||function(t){var e=t.tagName+t.className+t.src+t.href+t.textContent,n=e.length,o=0;for(;n--;)o+=e.charCodeAt(n);return o.toString(36)}(t));return e},sort:function(t,e){var n={},o=this.el;this.toArray().forEach(function(t,e){e=o.children[e];N(e,this.options.draggable,o,!1)&&(n[t]=e)},this),e&&this.captureAnimationState(),t.forEach(function(t){n[t]&&(o.removeChild(n[t]),o.appendChild(n[t]))}),e&&this.animateAll()},save:function(){var t=this.options.store;t&&t.set&&t.set(this)},closest:function(t,e){return N(t,e||this.options.draggable,this.el,!1)},option:function(t,e){var n=this.options;if(void 0===e)return n[t];var o=K.modifyOption(this,t,e);n[t]=void 0!==o?o:e,"group"===t&&Pt(n)},destroy:function(){z("destroy",this);var 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f=h,p=k(f),g=p.top,m=p.bottom,v=p.left,b=p.right,y=p.width,w=p.height,E=void 0,D=void 0,S=f.scrollWidth,_=f.scrollHeight,C=P(f),T=f.scrollLeft,p=f.scrollTop,D=f===c?(E=y<S&&("auto"===C.overflowX||"scroll"===C.overflowX||"visible"===C.overflowX),w<_&&("auto"===C.overflowY||"scroll"===C.overflowY||"visible"===C.overflowY)):(E=y<S&&("auto"===C.overflowX||"scroll"===C.overflowX),w<_&&("auto"===C.overflowY||"scroll"===C.overflowY)),T=E&&(Math.abs(b-r)<=l&&T+y<S)-(Math.abs(v-r)<=l&&!!T),p=D&&(Math.abs(m-a)<=l&&p+w<_)-(Math.abs(g-a)<=l&&!!p);if(!Zt[d])for(var x=0;x<=d;x++)Zt[x]||(Zt[x]={});Zt[d].vx==T&&Zt[d].vy==p&&Zt[d].el===f||(Zt[d].el=f,Zt[d].vx=T,Zt[d].vy=p,clearInterval(Zt[d].pid),0==T&&0==p||(u=!0,Zt[d].pid=setInterval(function(){o&&0===this.layer&&Bt.active._onTouchMove(qt);var t=Zt[this.layer].vy?Zt[this.layer].vy*s:0,e=Zt[this.layer].vx?Zt[this.layer].vx*s:0;"function"==typeof i&&"continue"!==i.call(Bt.dragged.parentNode[j],e,t,n,qt,Zt[this.layer].el)||F(Zt[this.layer].el,e,t)}.bind({layer:d}),24))),d++}while(t.bubbleScroll&&h!==c&&(h=A(h,!1)));$t=u}},30),c=function(t){var e=t.originalEvent,n=t.putSortable,o=t.dragEl,i=t.activeSortable,r=t.dispatchSortableEvent,a=t.hideGhostForTarget,t=t.unhideGhostForTarget;e&&(i=n||i,a(),e=e.changedTouches&&e.changedTouches.length?e.changedTouches[0]:e,e=document.elementFromPoint(e.clientX,e.clientY),t(),i&&!i.el.contains(e)&&(r("spill"),this.onSpill({dragEl:o,putSortable:n})))};function ne(){}function oe(){}ne.prototype={startIndex:null,dragStart:function(t){t=t.oldDraggableIndex;this.startIndex=t},onSpill:function(t){var e=t.dragEl,n=t.putSortable;this.sortable.captureAnimationState(),n&&n.captureAnimationState();t=X(this.sortable.el,this.startIndex,this.options);t?this.sortable.el.insertBefore(e,t):this.sortable.el.appendChild(e),this.sortable.animateAll(),n&&n.animateAll()},drop:c},a(ne,{pluginName:"revertOnSpill"}),oe.prototype={onSpill:function(t){var e=t.dragEl,t=t.putSortable||this.sortable;t.captureAnimationState(),e.parentNode&&e.parentNode.removeChild(e),t.animateAll()},drop:c},a(oe,{pluginName:"removeOnSpill"});var ie,re,ae,le,se,ce=[],ue=[],de=!1,he=!1,fe=!1;function pe(n,o){ue.forEach(function(t,e){e=o.children[t.sortableIndex+(n?Number(e):0)];e?o.insertBefore(t,e):o.appendChild(t)})}function ge(){ce.forEach(function(t){t!==ae&&t.parentNode&&t.parentNode.removeChild(t)})}return Bt.mount(new function(){function t(){for(var t in this.defaults={scroll:!0,forceAutoScrollFallback:!1,scrollSensitivity:30,scrollSpeed:10,bubbleScroll:!0},this)"_"===t.charAt(0)&&"function"==typeof this[t]&&(this[t]=this[t].bind(this))}return t.prototype={dragStarted:function(t){t=t.originalEvent;this.sortable.nativeDraggable?h(document,"dragover",this._handleAutoScroll):this.options.supportPointer?h(document,"pointermove",this._handleFallbackAutoScroll):t.touches?h(document,"touchmove",this._handleFallbackAutoScroll):h(document,"mousemove",this._handleFallbackAutoScroll)},dragOverCompleted:function(t){t=t.originalEvent;this.options.dragOverBubble||t.rootEl||this._handleAutoScroll(t)},drop:function(){this.sortable.nativeDraggable?f(document,"dragover",this._handleAutoScroll):(f(document,"pointermove",this._handleFallbackAutoScroll),f(document,"touchmove",this._handleFallbackAutoScroll),f(document,"mousemove",this._handleFallbackAutoScroll)),Jt(),Qt(),clearTimeout(g),g=void 0},nulling:function(){qt=zt=Wt=$t=Vt=Gt=Ut=null,Zt.length=0},_handleFallbackAutoScroll:function(t){this._handleAutoScroll(t,!0)},_handleAutoScroll:function(e,n){var o,i=this,r=(e.touches?e.touches[0]:e).clientX,a=(e.touches?e.touches[0]:e).clientY,t=document.elementFromPoint(r,a);qt=e,n||this.options.forceAutoScrollFallback||w||y||u?(ee(e,this.options,t,n),o=A(t,!0),!$t||Vt&&r===Gt&&a===Ut||(Vt&&Jt(),Vt=setInterval(function(){var t=A(document.elementFromPoint(r,a),!0);t!==o&&(o=t,Qt()),ee(e,i.options,t,n)},10),Gt=r,Ut=a)):this.options.bubbleScroll&&A(t,!0)!==O()?ee(e,this.options,A(t,!1),!1):Qt()}},a(t,{pluginName:"scroll",initializeByDefault:!0})}),Bt.mount(oe,ne),Bt.mount(new function(){function t(){this.defaults={swapClass:"sortable-swap-highlight"}}return t.prototype={dragStart:function(t){t=t.dragEl;te=t},dragOverValid:function(t){var e=t.completed,n=t.target,o=t.onMove,i=t.activeSortable,r=t.changed,a=t.cancel;i.options.swap&&(t=this.sortable.el,i=this.options,n&&n!==t&&(t=te,te=!1!==o(n)?(I(n,i.swapClass,!0),n):null,t&&t!==te&&I(t,i.swapClass,!1)),r(),e(!0),a())},drop:function(t){var e,n,o=t.activeSortable,i=t.putSortable,r=t.dragEl,a=i||this.sortable,l=this.options;te&&I(te,l.swapClass,!1),te&&(l.swap||i&&i.options.swap)&&r!==te&&(a.captureAnimationState(),a!==o&&o.captureAnimationState(),n=te,t=(e=r).parentNode,l=n.parentNode,t&&l&&!t.isEqualNode(n)&&!l.isEqualNode(e)&&(i=B(e),r=B(n),t.isEqualNode(l)&&i<r&&r++,t.insertBefore(n,t.children[i]),l.insertBefore(e,l.children[r])),a.animateAll(),a!==o&&o.animateAll())},nulling:function(){te=null}},a(t,{pluginName:"swap",eventProperties:function(){return{swapItem:te}}})}),Bt.mount(new function(){function t(o){for(var t in this)"_"===t.charAt(0)&&"function"==typeof this[t]&&(this[t]=this[t].bind(this));o.options.avoidImplicitDeselect||(o.options.supportPointer?h(document,"pointerup",this._deselectMultiDrag):(h(document,"mouseup",this._deselectMultiDrag),h(document,"touchend",this._deselectMultiDrag))),h(document,"keydown",this._checkKeyDown),h(document,"keyup",this._checkKeyUp),this.defaults={selectedClass:"sortable-selected",multiDragKey:null,avoidImplicitDeselect:!1,setData:function(t,e){var n="";ce.length&&re===o?ce.forEach(function(t,e){n+=(e?", ":"")+t.textContent}):n=e.textContent,t.setData("Text",n)}}}return t.prototype={multiDragKeyDown:!1,isMultiDrag:!1,delayStartGlobal:function(t){t=t.dragEl;ae=t},delayEnded:function(){this.isMultiDrag=~ce.indexOf(ae)},setupClone:function(t){var e=t.sortable,t=t.cancel;if(this.isMultiDrag){for(var n=0;n<ce.length;n++)ue.push(_(ce[n])),ue[n].sortableIndex=ce[n].sortableIndex,ue[n].draggable=!1,ue[n].style["will-change"]="",I(ue[n],this.options.selectedClass,!1),ce[n]===ae&&I(ue[n],this.options.chosenClass,!1);e._hideClone(),t()}},clone:function(t){var e=t.sortable,n=t.rootEl,o=t.dispatchSortableEvent,t=t.cancel;this.isMultiDrag&&(this.options.removeCloneOnHide||ce.length&&re===e&&(pe(!0,n),o("clone"),t()))},showClone:function(t){var e=t.cloneNowShown,n=t.rootEl,t=t.cancel;this.isMultiDrag&&(pe(!1,n),ue.forEach(function(t){P(t,"display","")}),e(),se=!1,t())},hideClone:function(t){var e=this,n=(t.sortable,t.cloneNowHidden),t=t.cancel;this.isMultiDrag&&(ue.forEach(function(t){P(t,"display","none"),e.options.removeCloneOnHide&&t.parentNode&&t.parentNode.removeChild(t)}),n(),se=!0,t())},dragStartGlobal:function(t){t.sortable;!this.isMultiDrag&&re&&re.multiDrag._deselectMultiDrag(),ce.forEach(function(t){t.sortableIndex=B(t)}),ce=ce.sort(function(t,e){return t.sortableIndex-e.sortableIndex}),fe=!0},dragStarted:function(t){var e,n=this,t=t.sortable;this.isMultiDrag&&(this.options.sort&&(t.captureAnimationState(),this.options.animation&&(ce.forEach(function(t){t!==ae&&P(t,"position","absolute")}),e=k(ae,!1,!0,!0),ce.forEach(function(t){t!==ae&&C(t,e)}),de=he=!0)),t.animateAll(function(){de=he=!1,n.options.animation&&ce.forEach(function(t){T(t)}),n.options.sort&&ge()}))},dragOver:function(t){var e=t.target,n=t.completed,t=t.cancel;he&&~ce.indexOf(e)&&(n(!1),t())},revert:function(t){var n,o,e=t.fromSortable,i=t.rootEl,r=t.sortable,a=t.dragRect;1<ce.length&&(ce.forEach(function(t){r.addAnimationState({target:t,rect:he?k(t):a}),T(t),t.fromRect=a,e.removeAnimationState(t)}),he=!1,n=!this.options.removeCloneOnHide,o=i,ce.forEach(function(t,e){e=o.children[t.sortableIndex+(n?Number(e):0)];e?o.insertBefore(t,e):o.appendChild(t)}))},dragOverCompleted:function(t){var e,n=t.sortable,o=t.isOwner,i=t.insertion,r=t.activeSortable,a=t.parentEl,l=t.putSortable,t=this.options;i&&(o&&r._hideClone(),de=!1,t.animation&&1<ce.length&&(he||!o&&!r.options.sort&&!l)&&(e=k(ae,!1,!0,!0),ce.forEach(function(t){t!==ae&&(C(t,e),a.appendChild(t))}),he=!0),o||(he||ge(),1<ce.length?(o=se,r._showClone(n),r.options.animation&&!se&&o&&ue.forEach(function(t){r.addAnimationState({target:t,rect:le}),t.fromRect=le,t.thisAnimationDuration=null})):r._showClone(n)))},dragOverAnimationCapture:function(t){var e=t.dragRect,n=t.isOwner,t=t.activeSortable;ce.forEach(function(t){t.thisAnimationDuration=null}),t.options.animation&&!n&&t.multiDrag.isMultiDrag&&(le=a({},e),e=v(ae,!0),le.top-=e.f,le.left-=e.e)},dragOverAnimationComplete:function(){he&&(he=!1,ge())},drop:function(t){var e=t.originalEvent,n=t.rootEl,o=t.parentEl,i=t.sortable,r=t.dispatchSortableEvent,a=t.oldIndex,l=t.putSortable,s=l||this.sortable;if(e){var c,u,d,h=this.options,f=o.children;if(!fe)if(h.multiDragKey&&!this.multiDragKeyDown&&this._deselectMultiDrag(),I(ae,h.selectedClass,!~ce.indexOf(ae)),~ce.indexOf(ae))ce.splice(ce.indexOf(ae),1),ie=null,W({sortable:i,rootEl:n,name:"deselect",targetEl:ae,originalEvent:e});else{if(ce.push(ae),W({sortable:i,rootEl:n,name:"select",targetEl:ae,originalEvent:e}),e.shiftKey&&ie&&i.el.contains(ie)){var p=B(ie),t=B(ae);if(~p&&~t&&p!==t)for(var g,m=p<t?(g=p,t):(g=t,p+1);g<m;g++)~ce.indexOf(f[g])||(I(f[g],h.selectedClass,!0),ce.push(f[g]),W({sortable:i,rootEl:n,name:"select",targetEl:f[g],originalEvent:e}))}else ie=ae;re=s}fe&&this.isMultiDrag&&(he=!1,(o[j].options.sort||o!==n)&&1<ce.length&&(c=k(ae),u=B(ae,":not(."+this.options.selectedClass+")"),!de&&h.animation&&(ae.thisAnimationDuration=null),s.captureAnimationState(),de||(h.animation&&(ae.fromRect=c,ce.forEach(function(t){var e;t.thisAnimationDuration=null,t!==ae&&(e=he?k(t):c,t.fromRect=e,s.addAnimationState({target:t,rect:e}))})),ge(),ce.forEach(function(t){f[u]?o.insertBefore(t,f[u]):o.appendChild(t),u++}),a===B(ae)&&(d=!1,ce.forEach(function(t){t.sortableIndex!==B(t)&&(d=!0)}),d&&r("update"))),ce.forEach(function(t){T(t)}),s.animateAll()),re=s),(n===o||l&&"clone"!==l.lastPutMode)&&ue.forEach(function(t){t.parentNode&&t.parentNode.removeChild(t)})}},nullingGlobal:function(){this.isMultiDrag=fe=!1,ue.length=0},destroyGlobal:function(){this._deselectMultiDrag(),f(document,"pointerup",this._deselectMultiDrag),f(document,"mouseup",this._deselectMultiDrag),f(document,"touchend",this._deselectMultiDrag),f(document,"keydown",this._checkKeyDown),f(document,"keyup",this._checkKeyUp)},_deselectMultiDrag:function(t){if(!(void 0!==fe&&fe||re!==this.sortable||t&&N(t.target,this.options.draggable,this.sortable.el,!1)||t&&0!==t.button))for(;ce.length;){var e=ce[0];I(e,this.options.selectedClass,!1),ce.shift(),W({sortable:this.sortable,rootEl:this.sortable.el,name:"deselect",targetEl:e,originalEvent:t})}},_checkKeyDown:function(t){t.key===this.options.multiDragKey&&(this.multiDragKeyDown=!0)},_checkKeyUp:function(t){t.key===this.options.multiDragKey&&(this.multiDragKeyDown=!1)}},a(t,{pluginName:"multiDrag",utils:{select:function(t){var e=t.parentNode[j];e&&e.options.multiDrag&&!~ce.indexOf(t)&&(re&&re!==e&&(re.multiDrag._deselectMultiDrag(),re=e),I(t,e.options.selectedClass,!0),ce.push(t))},deselect:function(t){var e=t.parentNode[j],n=ce.indexOf(t);e&&e.options.multiDrag&&~n&&(I(t,e.options.selectedClass,!1),ce.splice(n,1))}},eventProperties:function(){var n=this,o=[],i=[];return ce.forEach(function(t){var e;o.push({multiDragElement:t,index:t.sortableIndex}),e=he&&t!==ae?-1:he?B(t,":not(."+n.options.selectedClass+")"):B(t),i.push({multiDragElement:t,index:e})}),{items:r(ce),clones:[].concat(ue),oldIndicies:o,newIndicies:i}},optionListeners:{multiDragKey:function(t){return"ctrl"===(t=t.toLowerCase())?t="Control":1<t.length&&(t=t.charAt(0).toUpperCase()+t.substr(1)),t}}})}),Bt});