Replace deprecated User::editToken call

Change-Id: If56a1c12adb5428baf4b08937762191c0e382f66
speed up revision-based queries (not)createdby and (not)modifiedby

Change-Id: I435c38a411740702b11b1824436af5494d428924
Use public instead of var in classes

Change-Id: I06f550f3d1cf343934d453b3acebb1f5b6df2019
Merge "speed up revision-based queries (not)createdby and (not)modifiedby"
Don't check for Template:Extension_DPL during update

The check causes MediaWiki to execute some code that depends on some
updates having been run, which is no good.

bug: 60492
Change-Id: I4305eb1db19005aa09c6ea76086f402aba41bade
Merge in from remote and my changes.