Fix showing loader during loading chat logs on chatroom change.
Fixed scrollbars in chat interface.
Cleaned up remaining template rendered callbacks.
Set proper height for chat logs table on chat room change.
Fix autocompleting nick in chat input.
Bugfix in inserting channel log via channelLogsManager.
Bugfix in highlighting a channel room.
Reactively initiate channel nick autocomplete feature.
Fix joining/parting channel from channel menu.
Fix joining/quitting server from server menu.