Updated mediawiki/extensions
Project: mediawiki/extensions/Translate  e1eaedea0fb0908800af9d81a254edb0a8b85988
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Fix accesskey problems

Make sure there are always only one button with given accesskey.
Add accesskeys when editor is shown, remove those accesskeys from
other buttons. Also renamed the classes of save and skip buttons
for docs so that I would not be adding accesskeys to those too,
which would again break things.

Change-Id: I064561bf801f4cad531fc6711d52a8ab446ccaa5