Update friends list handlers
Merge branch 'server-refactoring' of https://github.com/Regalis/Jamii into GUI-refactoring
Change get_users_data format
Merge branch 'server-refactoring' of https://github.com/Regalis/Jamii into GUI-refactoring
Add signal_user_data_available to JamiiCore for asynchronous operations
Merge branch 'server-refactoring' of https://github.com/Regalis/Jamii into GUI-refactoring
working signal conference