[frontend] Unified panels (#812)

* settings panel restructuring

* clean up old Gin handlers

* colorscheme redesign, some other small css tweaks

* basic router layout, error boundary

* colorscheme redesign, some other small css tweaks

* kebab-case consistency

* superfluous padding on applist

* remove unused consts

* redux, whitespace changes..

* use .jsx extensions for components

* login flow up till app registration

* full redux oauth implementation, with basic error handling

* split oauth api functions

* oauth api revocation handling

* basic profile change submission

* move old dir

* profile overview

* fix keeping track of the wrong instance url (for different instance/api domains)

* use redux state for profile form

* delete old/index.js, old/basic.js, fully implemented

* implement old/user/profile.js

* implement password change

* remove debug logging

* support future api for removing files

* customize profile css

* remove unneeded wrapper components

* restructure form fields

* start on admin pages

* admin panel settings

* admin settings panel

* remove old/admin files

* add top-level redirect

* refactor/cleanup forms

* only do API checks on logged-in state

* admin-status based routing

* federation block routing

* federation blocks

* upgrade dependencies

* react 18 changes

* media cleanup

* fix useEffect hooks

* remove unused require

* custom emoji base

* emoji uploader

* delete last old panel files

* sidebar styling, remove unused page

* refactor submit functions

* fix sidebar boxshadow-border

* fix old css variables

* fix fake-toot avatar

* fix non-square emoji

* fix user settings redux keys

* properly get admin account contact from instance response

* Account.source default values

* source.status_format key

* mobile responsiveness

* mobile element tweaks

* proper redirect after removing block

* add redirects for old setting panel urls

* deletes

* fix mobile overflow

* clean up debug logging calls

web/template/frontend.tmpl

@@ -1,5 +1,6 @@
 {{ template "header.tmpl" .}}
 <main class="lightgray">
-	<div id="root"></div>
+	<div id="root">
+	</div>
 </main>
 {{ template "footer.tmpl" .}}

web/template/index.tmpl

@@ -1,5 +1,5 @@
 {{ template "header.tmpl" .}}
-<section class="excerpt_top">
+<section class="excerpt-top">
 	home to <span class="count">{{.instance.Stats.user_count}}</span> users
 		who posted <span class="count">{{.instance.Stats.status_count}}</span> statuses,
 		federating with  <span class="count">{{.instance.Stats.domain_count}}</span> other instances.

web/template/status.tmpl

@@ -2,6 +2,10 @@
 	<a href="{{.Account.URL}}" class="avatar"><img src="{{.Account.Avatar}}" alt=""></a>
 	<a href="{{.Account.URL}}" class="displayname">{{if .Account.DisplayName}}{{emojify .Account.Emojis (escape .Account.DisplayName)}}{{else}}{{.Account.Username}}{{end}}</a>
 	<a href="{{.Account.URL}}" class="username">@{{.Account.Acct}}</a>
+	<div class="not-expanded">
+		<span class="visibility">{{.Visibility | visibilityIcon}}</span>
+		<span class="date">{{.CreatedAt | timestamp}}</span>
+	</div>
 	<div class="text">
 		{{if .SpoilerText}}
 		<input class="spoiler" id="hideSpoiler-{{.ID}}" type="checkbox" style="display: none" aria-hidden="true" checked="true" />
@@ -43,7 +47,6 @@
 <div class="info">
 	<div id="date">{{.CreatedAt | timestamp}}</div>
 	<div class="stats">
-		<div id="visibility">{{.Visibility | visibilityIcon}}</div>
 		<div id="replies"><i aria-label="Replies" class="fa fa-reply-all"></i> {{.RepliesCount}}</div>
 		<div id="boosts"><i aria-label="Boosts" class="fa fa-retweet"></i> {{.ReblogsCount}}</div>
 		<div id="favorites"><i aria-label="Favorites" class="fa fa-star"></i> {{.FavouritesCount}}</div>