reset time for startOfWeek and startOfMonth

Author: David Tahir

lib/Controller/AjaxController.php

@@ -1180,13 +1180,15 @@ public function getStartOfWeek($timestamp){
 		$weeknumber = $date->format("W");
 		$year = $date->format("Y");
 		$weekstartdt = new \DateTime();
+		$weekstartdt->setTime(0, 0, 0, 0);
 		$weekstartdt->setISODate($year, $weeknumber);
 
 		return $weekstartdt;
 	}
 	public function getStartOfMonth($timestamp){
 		$date = new \DateTime('@'.$timestamp);
 		$date->modify('first day of this month');
+		$date->setTime(0, 0, 0, 0);
 
 		return $date;
 	}