Some of the code encountered accessed mw.config directly,
I cleaned that up by migrating to mmv.Config, which is an
abstraction added to avoid peeking at mw.config directly.
Bug: T132064
Change-Id: I2a95ba703e6c7f46296f8e435bceec769dceebf9
This is complete, but it would be better if the HEAD request
was actually aborted by Varnish when the viewDuration parameter is
present, or if the hit pointed to a script that does that.
Change-Id: I66cafd97427756411e967de1901324af2215e3ae
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/1001
