Huge refactor

- Remove some underscore-prefixes
 - Start using this-> more
 - Remove a few of the singletons (We pass references to managers to
         things that need it now. Might not be much better, but for now
         it works. It also shows what places might be slightly wrong
         designed)

src/messages/messageref.cpp

@@ -41,7 +41,11 @@ bool MessageRef::layout(int width, bool enableEmoteMargins)
     int mediumTextLineHeight =
         FontManager::getInstance().getFontMetrics(FontManager::Medium).height();
 
+    /* TODO(pajlada): Re-implement
     bool recalculateImages = _emoteGeneration != EmoteManager::getInstance().getGeneration();
+    */
+    bool recalculateImages = true;
+
     bool recalculateText = _fontGeneration != FontManager::getInstance().getGeneration();
     bool newWordTypes = _currentWordTypes != SettingsManager::getInstance().getWordTypeMask();
 
@@ -53,7 +57,7 @@ bool MessageRef::layout(int width, bool enableEmoteMargins)
         return false;
     }
 
-    _emoteGeneration = EmoteManager::getInstance().getGeneration();
+    // _emoteGeneration = EmoteManager::getInstance().getGeneration();
     _fontGeneration = FontManager::getInstance().getGeneration();
 
     for (auto &word : _message->getWords()) {