Updated mediawiki/extensions
Project: mediawiki/extensions/Vector  d23ba62c4c18dff0cee0d99dfaa3db7e66f51418

$.collapsibleTabs: rewrite code for expandCondition and collapseCondition

...to make it slightly more understandable. Per Ori's comments on
I62aeb2b6.

Change-Id: Ib0e41916006cd4a3d6077345e3199fb4d5d77556