Refactor datetime_convert into Temporal::convert

- Changed parameter order to save space
- Refactor select_timezone into Temporal::getTimezoneSelect
- Refactor field_timezone into Temporal::getTimezoneField

include/text.php

@@ -2,6 +2,7 @@
 /**
  * @file include/text.php
  */
+
 use Friendica\App;
 use Friendica\Content\ContactSelector;
 use Friendica\Content\Feature;
@@ -15,6 +16,7 @@ use Friendica\Database\DBM;
 use Friendica\Model\Profile;
 use Friendica\Model\Term;
 use Friendica\Util\Map;
+use Friendica\Util\Temporal;
 
 require_once "mod/proxy.php";
 require_once "include/conversation.php";
@@ -721,7 +723,7 @@ function logger($msg, $level = 0) {
 
 	$callers = debug_backtrace();
 	$logline = sprintf("%s@%s\t[%s]:%s:%s:%s\t%s\n",
-			datetime_convert('UTC', 'UTC', 'now', 'Y-m-d\TH:i:s\Z'),
+			Temporal::convert('now', 'UTC', 'UTC', 'Y-m-d\TH:i:s\Z'),
 			$process_id,
 			$LOGGER_LEVELS[$level],
 			basename($callers[0]['file']),
@@ -787,7 +789,7 @@ function dlogger($msg, $level = 0) {
 
 	$callers = debug_backtrace();
 	$logline = sprintf("%s@\t%s:\t%s:\t%s\t%s\t%s\n",
-			datetime_convert(),
+			Temporal::convert(),
 			$process_id,
 			basename($callers[0]['file']),
 			$callers[0]['line'],