FreeNAS Code

use a done method within ModelForm to run some code after FormSet save

introduce the concept of Inline formset into FreeAdmin;
prototype for interface ip aliases (GUI only)

fix the extra form for generic model delete

fix typo

introduce events to ServiceFailed exception so the button can be toggled again

catch ServiceFailed Exception on model add as well

fix imports (ty to Chyssler)

set title to "hostname - freenas_version"

bugfix admin change user

render accepts a content_typr and not mimetype