[Client][ActionType] Add new action types.
[Client][Chat] Add point.
[Client][Conference] Add new dependency.
[Client][Controller] Add processing join and leave conference.
[Client][View] Some changes in creation chats.
[Client][UserList] Copy from server.
[Server][Controller] Add processing USER_*_CONFERENCE.
[Server][ActionType] Add USER_*_CONFERENCE.
[Client][Controller] Add processing USER_*_CONFERENCE.