Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  d1646c939224633290f6e313689d21a0b121de73

Remove useless HTML comments

They are not needed. The code is indented and when inspecting code in
Chrome Developer Tools or Firebug, they provide absolutely no value.

Plus, we don't strip them in production.

Change-Id: I2cad742d26a6bbe50e8f21a26b2b562df37c6e83