Change showOptions to selectedUser
Make selectedUser optional

This fixes NON_ASSIGNABLE_MODEL_EXPRESSION error.
Add $scope.toggleOptions to UserCtrl
UserOptionsCtrl.query(user) should register the query
Add kick and ban functionality to useroptions
Add rank options
Add getRank() function to UserOptionsCtrl

- Show options based on current user's rank
Merge pull request #14 from coldstorm/useroptions-wip

Implement useroptions