Support for FlaggedRevs patrolling

Replaces basic built-in MediaWiki patrolling. Will always only review
at the most basic "accuracy level", which is what every Wikimedia wiki
uses.

Added 'ActionReview' to 'enum Action' to support FlaggedRevs API
queries.

Added config option 'PatrollingFlaggedRevs' / 'patrolling-flaggedrevs'
to enable this feature, false by default.
s/char */const char */
Register PatrollingFlaggedRevs in configuration.hpp too
some cleanup

I was sleeping and now I have no idea what I did before, but it looks just as some generic code fixes
Merge branch 'master' of github.com:huggle/huggle3-qt-lx
disable multithreaded GC

there are some problems with it in windows, needs to fix
Merge pull request #71 from MatmaRex/flaggedrevs

Support for FlaggedRevs patrolling
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