A little batch of fixes, addition of ManagePermissions to controllers, rework avatars and attach to forms.
Also added action_balancingSettings_save(), currently unused.
Introduced some redundancy (meant as temporary, during refactoring/rewriting stuff).
Deprecated a few settings() methods. (because some are replaced with form initialization,
_initXxxForm; apart from initializing forms with them, they seem only used for admin search,
I'm not sure yet if it's worth keeping settings() in each controller only for that - will see later.)

Signed-off-by: Norv <a.w.norv@gmail.com>