Updated mediawiki/extensions
Project: mediawiki/extensions/Echo  0558ab157176968d79b049a19c30ef649c64c924

Calling functions explicitly due to context

When I changed mw.echo.special.initialize to be called as a
callback from $( document ).ready(), rather than being called
explicitly from the closure, it changed the context, which got
assigned to _this. This broke some of the function calls.

Change-Id: I602a58a82ee91646901d0ab1c8b7bb4b22b3437a