Merge pull request #939 from andrewgoktepe/utc-timezone

add UTC time zone as an option on Application Setup page

app/Composers/TimezoneLocaleComposer.php

@@ -47,6 +47,7 @@ class TimezoneLocaleComposer
             'Europe'     => DateTimeZone::EUROPE,
             'Indian'     => DateTimeZone::INDIAN,
             'Pacific'    => DateTimeZone::PACIFIC,
+            'UTC'        => DateTimeZone::UTC,
         ];
 
         $timezones = [];