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Remove template parse operation on every page view

Authored by tstarling.

Description

Remove template parse operation on every page view

This was responsible for 90% of Revision::fetchFromConds queries seen at
the enwiki master DB server, and perhaps 30% of overall enwiki master
query load.

Change-Id: I0daaeb2ed4fa4b5000446ee6b84d40c113d22122