[Util] Added Concat to prelude.
[Azoth Tracolor] Added basic EntryEventsManager stubs.
[Azoth] Set SubSourceID for MUC events.
[Azoth Tracolor] Instantiate & keep events manager.
[Azoth Tracolor] Draw nice red icons.
[Kinotify] "High" handling priority.
[Core] Changed EntityTestHandleResult::CancelOthers_ semantics.

Now it aborts handling by other plugins that have lower entity test handle
priority results. Same-and higher-level plugins still get a chance to
handle the entity.
[DeadLyrics] Fixed Qt 5.4 build.
[Liznoo] Find QtConcurrent.
[Liznoo] Added missing include.
[Blogique Metida] Fixed Qt 5.4 compilation.
[Interfaces] Removed unneeded QList<QModelIndex> metatyping.
[Interfaces] Fixed IJobHolder Qt 5 compatibility.
[Summary] Don't set "SelectedRows".
[Imgaste] Implement IJobHolder.
[Imgaste] Pass representation model to Poster.
[Imgaste] Set progress data for uploading images.
[Imgaste] Updated translations.
[Azoth Sarin] Added ctors to ToxAccountConfiguration.
[Azoth Tracolor] Added entryEventRateChanged().