SLG Comms 2.2.3 released

Bugfix release

v2.2.3
- New language item {TEXT_INVALID_CONF_FILE}
- Added extra checks whether needed variables for forum support are available.
- Added support for vBulletin 3.5.0
- Fixed a bug in the db mysqli class (mysql41.inc.php) when a port is given to connect to.
- Fixed a problem with a getting a blank html page when MySQL extension isn't loaded. An appropriate error will be displayed now.
- Fixed a fatal error message when notusing the apache webserver.