Emergency generator, avatar change, improvements.

[ADDED]     Ability to change avatar while creating new user.
[FIXED]     Transition oddness.
[IMPROVED]  Remove passwordsVC while not needed.
[ADDED]     Emergency generator.

MasterPassword/ObjC/iOS/MPCombinedViewController.h

@@ -28,6 +28,4 @@ typedef NS_ENUM(NSUInteger, MPCombinedMode) {
 
 @property(assign, nonatomic) MPCombinedMode mode;
 
-- (IBAction)doSignOut:(UIBarButtonItem *)sender;
-
 @end