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, deprecated a few settings() methods. (because I'd replace them with form initialization,
_initXxxForm; apart from initializing forms with them, they seem only used for admin search.)

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