"incremental" way of measuring quality of orderings
writting to the db added
rerun of processing users' comparisons (untested)
Merge remote-tracking branch 'origin/production' into mshavlov
field user_accuracy added to db.submission table
using db.submission instead of db.quality for storing dist param
"recompute ranks" button added
view for recompute ranks
"Evaluate contributors" button is added
small fix
rank recomputing tested
bug fix
deleted code for testing
"compute final grades" button is added
Merge remote-tracking branch 'origin/master' into mshavlov

Conflicts:
	controllers/venues.py
	models/tables.py
made buttons visible after merging with master (I should have merged earlier)
Improved the way to enter reviews, as well.
Merge remote-tracking branch 'origin/mshavlov' into luca

Conflicts:
	controllers/venues.py
	models/tables.py
Merge remote-tracking branch 'origin/mshavlov' into luca

Conflicts:
	controllers/venues.py
Some progress towards making reviews editable.
Merge branch 'master' into luca

Conflicts:
	controllers/venues.py
	models/tables.py