Fix the user settings

- When language is changed, update the menu and translations immediately
- When time zone is changed, update it immediately
- Flush the settings apcu cache if enabled

app/emergency/emergency.php

@@ -110,12 +110,7 @@ list($paging_controls_mini, $rows_per_page) = paging($num_rows, $param, $rows_pe
 $offset = $rows_per_page * $page;
 
 //set the time zone
-if (isset($_SESSION['domain']['time_zone']['name'])) {
-	$time_zone = $_SESSION['domain']['time_zone']['name'];
-}
-else {
-	$time_zone = date_default_timezone_get();
-}
+$time_zone = $settings->get('domain', 'time_zone', date_default_timezone_get());
 
 //get the list
 $sql = "select e.emergency_log_uuid, ";