add option: always show all sensitive content without warning

app/src/main/java/com/keylesspalace/tusky/adapter/StatusBaseViewHolder.java

@@ -1,6 +1,7 @@
 package com.keylesspalace.tusky.adapter;
 
 import android.content.Context;
+import android.content.SharedPreferences;
 import android.graphics.drawable.Drawable;
 import android.preference.PreferenceManager;
 import android.support.annotation.DrawableRes;
@@ -226,8 +227,9 @@ class StatusBaseViewHolder extends RecyclerView.ViewHolder {
                 });
             }
         }
-
-        if (sensitive) {
+        SharedPreferences pm = PreferenceManager.getDefaultSharedPreferences(context);
+        Boolean isAlwayShowSensitive = pm.getBoolean("alwayShowSensitiveMedia",false);
+        if (sensitive && (!isAlwayShowSensitive)) {
             sensitiveMediaWarning.setVisibility(showingSensitive ? View.GONE : View.VISIBLE);
             sensitiveMediaWarning.setOnClickListener(new View.OnClickListener() {
                 @Override

app/src/main/java/com/keylesspalace/tusky/fragment/TimelineFragment.java

@@ -270,7 +270,6 @@ public class TimelineFragment extends SFragment implements
                     if (status.reblog != null) {
                         status.reblog.reblogged = reblog;
                     }
-
                     StatusViewData newViewData =
                             new StatusViewData.Builder(statuses.getPairedItem(position))
                                     .setReblogged(reblog)

app/src/main/res/values/strings.xml

@@ -213,6 +213,7 @@
     <string name="abbreviated_seconds_ago">%ds</string>
 
     <string name="follows_you">Follows you</string>
+    <string name="pref_title_alway_show_sensitive_media">Always show all nsfw content</string>
 
 
 </resources>

app/src/main/res/xml/preferences.xml

@@ -19,6 +19,11 @@
             android:title="@string/pref_title_show_media_preview"
             android:defaultValue="true" />
 
+        <CheckBoxPreference
+            android:key="alwayShowSensitiveMedia"
+            android:title="@string/pref_title_alway_show_sensitive_media"
+            android:defaultValue="false" />
+
     </PreferenceCategory>
     <PreferenceCategory android:title="@string/pref_title_browser_settings">
         <CheckBoxPreference