Deprecate `$_REQUEST['styleID']`
Deprecate `$_REQUEST['styleID']`

The implementation of the styleID request parameter is very messy, allows for XSRF attacks due to missing validation, might collide with controllers using styleID parameters for their own purpose and can easily be replaced by a plugin if necessary (e.g. for demo setups).

WoltLab/WCF,Cyperghost/WCF,Cyperghost/WCF,Cyperghost/WCF,WoltLab/WCF,WoltLab/WCF,WoltLab/WCF,SoftCreatR/WCF,SoftCreatR/WCF,SoftCreatR/WCF,Cyperghost/WCF,SoftCreatR/WCF,Cyperghost/WCF