[Azoth VB] Removed obsolete {got,delegate}Entity() signals.
[Azoth VB] Use shared_ptr for keeping protocols.
[Azoth VB] Hide libpurple's jabber and IRC implementation.
[LMP] Use CustomContextMenu for LyricsBrowser.
[LMP] Support datafilters for selection in lyrics browser.
[LMP] Suggest datafilters iff lyrics selection is non-empty.
[Azoth VB] Code style fixes.
[Azoth Xoox] Code style fixes.