Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  4b8545fb38258ca16ec75f67895fe7f80abc6aaf

Remember expanded sections on page reload or when going back to the previous page. Add QUnit tests.

Bug: 69351
Change-Id: I0dd2beb47fb58c1ce79945d6d72184b8765d36ba