Updated mediawiki/extensions
Project: mediawiki/extensions/UniversalLanguageSelector  18fe41ccf7792e224116a244191e5446baad8e69

Fix ULS QUnit tests

Tests were failing for two reasons: wrong modules as dependencies of the
test module and test timing out due to incorrect usage of QUnit.asyncTest
and QUnit.start() and QUnit.Stop.

While at it, did some small cleanups and converted the number of
assertions to use non-deprecated QUnit.expect() instead.

Options are saved using postWithToken of mw.API. This also rises minimum
MediaWiki version to 1.22. This allowed removing hundred lines of code.
MLEB is already 1.22 and above.

Change-Id: I46a1674e4ede48a0e331c8d201d1d847db51d9dd