Updated mediawiki/extensions
Project: mediawiki/extensions/BlueSpiceExtensions  a9b175712206fed58e0a2a1843a39ab5bfc5eec8

Don't use parse() for description

Calling parse() in __construct initialises Parser too early so our hooks
are not registered

Change-Id: Ia59ead686c218e48fa14a96cce2a0064fec9c30d