[NSM] add filter
[Azoth Xoox] Return room CL entry if variant is empty.

Dunno if it breaks anything.
[Blogique Metida] use plain friends model instead of tree with sort and
filter
[Blogique Metida] update coloring friends in friends list
[Blogique Metida] fix add/edit/delete friend dialogs
[Blogique Metida] fix groups for friends
[Blogique Metida] remove FriendsModel
[Blogique Metida] new friends group edit widget
[Blogique Metida] add action for friends list
[HH] Buffers are kept as a list of pairs now.
[HH] StorageManager::ResolvePath().
[HH] Connection::GetStorageManager().
[HH] Simple & dumb directory listing.
[Blogique Metida] add action for community list
[Blogique Metida] style fix
[Blogique] replace Update profile button with Show profile
[HH] Proper lines check.
[HH] Proper base URL.
[HH] Check for file/directory existence.
[HH] Properly send the file.