add bulk_player_exclude script, change a few existing scripts
added ability for different regions to have different inactivity criteria. still need to write tests for it
model tests pass
dao tests pass
rankings wip
change nyc inactivity to 90/3
fixed rating calculator to work with ratings dict
rankings still wip
rankings tests pass
server tests pass. all tests pass
Show skill/uncertainty tooltip over rating
Merge pull request #9 from jiangtyd/jiangtyd/view-sigma

Show mu/sigma tooltip when you hover over rating
formatting changes to rating tooltip
change merge players to also merge regions
db migration done, fixed region dropdown
fix get_all_players query and remove unnecessary capitalization code in dropdown
fix webapp to work with new region object
fix player list page to work with new regions
fix rating display on player detail page
Merge branch 'database'

Conflicts:
	test/test_rankings.py
	webapp/player_detail.html