Updated mediawiki/extensions
Project: mediawiki/extensions/Translate  7e5aa8e8b2434d2fd0707bd37f8a3db5104bc7b8

Provide onSave callback for translate editor

And use it for proofread mode editing

Change-Id: Ia0d5ae8dd41e5ce09f21f18da7104d3daa9bc87e