Add new actions to move issue when the assignee is changed.

This will *not* fire the task_moved events, to avoid triggering other auto-assign actions.
This does not seem ideal, but I see no easy way to implement this properly (e.g. checking the event
stack).

app/Model/Action.php

@@ -45,6 +45,8 @@ class Action extends Base
             'TaskAssignCurrentUser' => t('Assign the task to the person who does the action'),
             'TaskDuplicateAnotherProject' => t('Duplicate the task to another project'),
             'TaskMoveAnotherProject' => t('Move the task to another project'),
+            'TaskMoveColumnAssigned' => t('Move the task to another column when assigned to a user'),
+            'TaskMoveColumnUnAssigned' => t('Move the task to another column when assignee is cleared'),
             'TaskAssignColorUser' => t('Assign a color to a specific user'),
             'TaskAssignColorCategory' => t('Assign automatically a color based on a category'),
             'TaskAssignCategoryColor' => t('Assign automatically a category based on a color'),

app/Model/TaskPosition.php

@@ -23,7 +23,7 @@ class TaskPosition extends Base
      * @param  integer    $swimlane_id       Swimlane id
      * @return boolean
      */
-    public function movePosition($project_id, $task_id, $column_id, $position, $swimlane_id = 0)
+    public function movePosition($project_id, $task_id, $column_id, $position, $swimlane_id = 0, $fire_events = true)
     {
         $original_task = $this->taskFinder->getById($task_id);
 
@@ -35,7 +35,8 @@ class TaskPosition extends Base
                 $this->calculateAndSave($project_id, 0, $column_id, 1, $original_task['swimlane_id']);
             }
 
-            $this->fireEvents($original_task, $column_id, $position, $swimlane_id);
+            if ($fire_events)
+                $this->fireEvents($original_task, $column_id, $position, $swimlane_id);
         }
 
         return $result;