split user shell into admin and default shells in settings.
Add low level update shell helper
Fixes #303

Update user view to distinguish between local users and admin users.
clean up console logs in add_user view.
Merge branch 'issue#303' of github.com:schakrava/rockstor-core into schakrava-issue#303
Add enable/disable admin to users table, make checkbox read-only
Merge branch 'master' into schakrava-issue#303

Add tooltip to delete user icon

Conflicts:
	src/rockstor/templates/storageadmin/js/js/templates/users/users.jst
return a single user dictionary instead of a list when the client GETs api/users/<uname>
User administration

Move web ui login checkbox to edit page
Remove ui login functionality from users page
Remove required fields indicator message
Merge branch 'schakrava-issue#303'