Update Core Login/Backend for correnct db class reference

ACL\Login and Admin\Backend do not extend DB\IO anymore which was a hold
over from old extend Class\Basic usage.
The old DB_CONFIG parameter has been replaced with DB\IO Object.
Also Admin\Backend has a language class overide loder like ACL\Login

www/lib/CoreLibs/Combined/DateTime.php

@@ -12,6 +12,57 @@ use Exception;
 
 class DateTime
 {
+	/** @var array<int,string> */
+	public const DAY_SHORT = [
+		1 => 'Mon',
+		2 => 'Tue',
+		3 => 'Wed',
+		4 => 'Thu',
+		5 => 'Fri',
+		6 => 'Sat',
+		7 => 'Sun'
+	];
+	/** @var array<int,string> */
+	public const DAY_LONG = [
+		1 => 'Monday',
+		2 => 'Tuesday',
+		3 => 'Wednesday',
+		4 => 'Thursday',
+		5 => 'Friday',
+		6 => 'Saturday',
+		7 => 'Sunday'
+	];
+	/** @var array<int,string> */
+	public const MONTH_LONG = [
+		1 => 'January',
+		2 => 'February',
+		3 => 'March',
+		4 => 'April',
+		5 => 'May',
+		6 => 'June',
+		7 => 'July',
+		8 => 'August',
+		9 => 'September',
+		10 => 'October',
+		11 => 'November',
+		12 => 'December'
+	];
+	/** @var array<int,string> */
+	public const MONTH_SHORT = [
+		1 => 'Jan',
+		2 => 'Feb',
+		3 => 'Mar',
+		4 => 'Apr',
+		5 => 'May',
+		6 => 'Jun',
+		7 => 'Jul',
+		8 => 'Aug',
+		9 => 'Sep',
+		10 => 'Oct',
+		11 => 'Nov',
+		12 => 'Dec'
+	];
+
 	/**
 	 * a simple wrapper for the date format
 	 * if an invalid timestamp is give zero timestamp unix time is used