Add missing placeholder (no rows) action

calendar/inc/class.calendar_uilist.inc.php

@@ -137,7 +137,8 @@ class calendar_uilist extends calendar_ui
 				'filter_onchange' => "app.calendar.filter_change",
 				'row_id'          => 'row_id',	// set in get rows "$event[id]:$event[recur_date]"
 				'row_modified'    => 'modified',
-				'favorites'       => true
+				'favorites'       => true,
+				'placeholder_actions' => array('add')
 			);
 		}
 		$content['nm']['actions'] = $this->get_actions();

resources/inc/class.resources_ui.inc.php

@@ -142,6 +142,7 @@ class resources_ui
 			$content['nm']['filter2'] = (int)$_GET['view_accs_of'];
 		}
 		$content['nm']['actions']	= $this->get_actions();
+		$content['nm']['placeholder_actions'] = array('add');
 
 		// check if user is permitted to add resources
 		// If they can't read any categories, they won't be able to save it

timesheet/inc/class.timesheet_ui.inc.php

@@ -900,6 +900,7 @@ class timesheet_ui extends timesheet_bo
 				//'actions'        => $this->get_actions(),
 				'default_cols'   => '!legacy_actions',	// switch legacy actions column and row off by default
 				'pm_integration' => $this->pm_integration,
+				'placeholder_actions' => array('add')
 			);
 		}
 		$content['nm']['actions'] = $this->get_actions($content['nm']);