Updated mediawiki/extensions
Project: mediawiki/extensions/E3Experiments  5431cf957e35d4f348869d7da5ccd4e948705e1a
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bug 43798: don't remove tasks from cookie on save

Per Dario Tarborelli and Steven Walling, leave article in openTask
cookie after user saves it so we continue to log events and tag edits in
RecentChanges.
Also match schema when logging initial clicks.

Change-Id: I2667312ce4b2e1dcefc4b8c87519511513b463bd