Updated mediawiki/extensions
Project: mediawiki/extensions/VectorBeta  e9c1b065173779880202fc52c07be644c77a0686

Remove dependency on MediaWiki core skins.vector.styles module

Also removed redundant 'line-height' declaration on blockquote
(it's already set to that from the inherited styles).

This is needed so that we can remove the Vector path from the global
Less import path list in MediaWiki core.

Change-Id: I6514a3418d3cd074458f83aa81065dba3ef00fdd