Fix(Tasks) - Quick fix errors msgs

Fixes errors messages and array to string conversion.

plugins/addons/tasks/class_tasks.inc

@@ -68,7 +68,7 @@ class tasks extends simplePlugin
             'fdSubTasksActivation', FALSE
           ),
         ]
-            ],
+      ],
     ];
   }
 

plugins/addons/tasks/class_tasksMail.inc

@@ -208,8 +208,9 @@ class tasksMail extends simplePlugin
 
         $errors = $tabObject->save();
 
+        // Showing errors should be better, enhancement here required.
         if (!empty($errors)) {
-          $show_error = new SimplePluginError($this, htmlescape(sprintf(_('Error : "%s", already exist ! Editing existing tasks is forbidden.'), $subTaskName.$errors)));
+          $show_error = new SimplePluginError($this, htmlescape(sprintf(_('Error : "%s", already exist ! Editing existing tasks is forbidden.'), $subTaskName)));
           $show_error->display();
         }
       }