[CORE][Form] Better PHPDoc and used is_null() for checks [ENTITY][LocalUser] Add setNicknameSanitisedAndCached [UTIL][Exception] Better NicknameNotAllowedException default message
[CORE][Form] Better PHPDoc and used is_null() for checks [ENTITY][LocalUser] Add setNicknameSanitisedAndCached [UTIL][Exception] Better NicknameNotAllowedException default message