These methods aren't designed to return "undefined" or "null".
What they return is not checked. It's assumed to always be an
object (2 of them) or an array (1 of them). This simple patch
does make sure the following code does not fail with TypeErrors.
Bug: 55701
Change-Id: I19f51bbff2209044485b9d7cef4c7654cb5f6425
In the "interlanguage" position ULS is shown after 2 clicks,
so don't load it initially.
In the "personal" position ULS is shown immediately after
the language icon click, so load it, but conditionally.
The new RL module ext.uls.mediawiki is added for setting
jquery.uls defaults in a way that will lazy-load the language names.
Change-Id: Ic33ef034c794a523b5403867196c6098a58eb5b1