Confirmation before removing an institution from the edit user page

htdocs/admin/users/edit.php

@@ -26,6 +26,7 @@
 
 define('INTERNAL', 1);
 define('INSTITUTIONALADMIN', 1);
+define('MENUITEM', 'configusers/usersearch');
 require(dirname(dirname(dirname(__FILE__))) . '/init.php');
 define('TITLE', get_string('accountsettings', 'admin'));
 define('SECTION_PLUGINTYPE', 'core');
@@ -252,6 +253,7 @@ foreach ($user->get('institutions') as $i) {
     $elements[$i->institution.'_remove'] = array(
         'type'  => 'submit',
         'value' => get_string('remove'),
+        'confirm' => get_string('confirmremoveuserfrominstitution', 'admin'),
     );
 }
 

htdocs/lang/en.utf8/admin.php

@@ -262,6 +262,7 @@ $string['unsuspenduser'] = 'Unsuspend User';
 $string['thisuserissuspended'] = 'This user has been suspended';
 $string['suspendedby'] = 'This user has been suspended by %s';
 $string['filequota'] = 'File quota (MB)';
+$string['confirmremoveuserfrominstitution'] = 'Are you sure you want to remove the user from this institution?';
 
 // Institutions
 $string['admininstitutions'] = 'Admininster Institutions';