Refactoring ChatViewHooks.
All plugins now use interface IChatViewHook.
Fix build.
Alternative fix for Qt4 comparability.
Added class BackdropWidget.
Added class DialogFrame.
Universal Qt5/Qt4 semi transparent backdrop.
Added config options "BlurEffect" and "BlurRadius".
Added class AddRoomDialog.
Fix for Qt4.
Updated translation.
[Channels] New icons.
[Channels] Version increment.
Merge branch 'chatview_hooks' into devel