ShiftEntry query now returns the related user.name as well.

This was done for API requests to save additional queries,
but should allow us to remove some queries pretty much everywhere shifts
get listed (will be done in a new PR eventually)

includes/model/Shifts_model.php

@@ -636,8 +636,9 @@ function Shift($shift_id)
     }
 
     $shiftsEntry_source = DB::select('
-        SELECT `id`, `TID` , `UID` , `freeloaded`
+        SELECT `ShiftEntry`.`id`, `ShiftEntry`.`TID` , `ShiftEntry`.`UID` , `ShiftEntry`.`freeloaded`, `users`.`name` AS `username`
         FROM `ShiftEntry`
+        LEFT JOIN `users` ON (`users`.`id` = `ShiftEntry`.`UID`)
         WHERE `SID`=?', [$shift_id]);
 
     $result['ShiftEntry'] = $shiftsEntry_source;