[Monocle] Update cache on threaded rendering.
[XSD] DataViewWidget's size policy should be Expanding.
[XSD] Expanding group boxes.
[LMP] Moved RG setting under the collection tree.
[Monocle] Don't regen pixmap if scale hasn't changed.
[Monocle] Non-static initialization.
[LMP] Check if album was found.
[LMP] Use encoded URLs for m3u playlists.

Fixes #1558.
[Azoth] Non-delayed invalidation.

Workaround a dreaded bug in Qt where model index gets corrupt and we segfault
on start.

Qt is crap :(
[Azoth Xoox] CarbonsManager stubs.
[Azoth Xoox] Slight code style fixes.
[Azoth Xoox] Moved forwarded2message converter to XooxUtil.
[Azoth Xoox] Support disabling requesting vcards and versions.
[Azoth] Removed unused code in the delegate.
[Azoth Xoox] Message handling support in CarbonsManager.
[Azoth Murm] Method for setting MUC title.
[Azoth Murm] Support MUC renames.
[Azoth Murm] Handle code 51 messages.
[Azoth Murm] React to MUC changes.
[Azoth Murm] VkEntry::ReemitGroups().