Fix bogus auth form timeout

h/static/scripts/auth/auth.coffee

@@ -52,7 +52,7 @@ class AuthController
         $timeout.cancel timeout
 
       # If the model is not empty, start the timeout
-      if value
+      if value and not angular.equals(value, {})
         timeout = $timeout ->
           $scope.model = null
           $scope.$broadcast 'timeout'

tests/js/auth-test.coffee

@@ -84,6 +84,11 @@ describe 'h.auth', ->
         assert.calledWith $scope.$broadcast, 'timeout'
 
       it 'should not happen if the model is empty', ->
+        $scope.model = undefined
+        $scope.$digest()
+        assert.notCalled $timeout
+
+        $scope.model = {}
         $scope.$digest()
         assert.notCalled $timeout