FreeNAS Code

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

change render_to_response for render in all views

Promote feedback to trunk.