Stuff
Refactoring: replacing ToxManager+PrivateFriends with ToxManagerFriends
Refactoring replacing ToxManager+PrivateAvatars with ToxManagerAvatars
Refactoring: replacing ToxManager+PrivateChates with ToxManagerChats
Refactoring: replacing ToxManager+PrivateFiles with ToxManagerFiles
Refactoring project.pbxproj
SettingsVC: updating text avatar on username change