Updated mediawiki/extensions
Project: mediawiki/extensions/E3Experiments  da57631b9abd98aa1ff89382257b9cd8bb389f65
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returnTo may start a task funnel; log more stuff.

If returnTo looks like a page, then clicking it sets up a task
accept-edit-success funnel.
Log title on accept, log namespace and protection; reference updated
schemas.
Dario requested these changes.

Change-Id: I847af25cbe93a97b6ae5357eeb8dd69da6a7ce7d