Refactorings performed necessary to have searchable for more uses
Created a test environment for repeatables
Got repeatables working flawlessly and improved the achievement popup by a great deal
Improved logging (winston) and admin-only'd the achievement editor
Added support for diminished exp for repeatables. Needs tweaking though.
Laid down the basics for an admin server endpoint
Recalculate script mainly finished
Added support for the  operator in LocalMongo
Added recalculation button to the achievement editor
Cleaned up achievement testing environment

Made sure server sided tests work completely
Finished basic functional tests for achievement
Took a detour to write tests for BadMethod. Queue's tests not working yet.
Worked on achievement tests
Fiddled with creating xp functions
Merge pull request #1150 from rubenvereecken/achievements

Achievements - Update with some tests and admin endpoint