Median release
- Backtracked change in main dictionary; it now includes the same subset of BÍN as before (basically everything except 'bibl' and plural question forms)
- Changed the Miðlungur robot to use a separate vocabulary, similar to what Amlóði does
- Added tests
- Removed extraneous indexes from the RatingModel datastore entities
- Added separate accounting of Elo points for manual-wordcheck games (not yet enabled in the UI)