Filter/Fixups

* fixed wrong indizes for gem color picker in locale 3 (deDE)
 * fixed interpretation of filter enums. Some are providing their value directly, others have an intermediate key.
 * createSQLForCriterium is no longer abstract. (was implemented in exactly the same way everywhere)
 * erronous criteria are now logged and discarded entirely)

includes/types/arenateam.class.php

@@ -55,8 +55,6 @@ class ArenaTeamListFilter extends Filter
         'sv' => [FILTER_V_CALLBACK, 'cbServerCheck',      false], // server
     );
 
-    protected function createSQLForCriterium(&$cr) { }
-
     protected function createSQLForValues()
     {
         $parts = [];