add historical score model and populate it on game save
Merge remote-tracking branch 'origin/master' into newHistoricalScore
get rid of winner/loser _last_score in historicalscore model
first attempt to display scores as subway lines
move logic to model and refactor to get for each game a result object (vs only the skill)
remove all logic from templatetag and update javascript accordingly
Merge remote-tracking branch 'origin/master' into newHistoricalScore
update recalculate to flush historical scores at startup
only show points in graph when there is a game
Merge remote-tracking branch 'origin/master' into newHistoricalScore

Conflicts:
	game/models.py
remove unnecessary templatetag and call directly method on model
put chart on top
clean up
attempt to fix tests in p3.3
fix exception in get_last_score_for_team if the team doesn't have any previous score
code cleanup
Put score chart JS code in its own file
Add very basic tests on historical scores
Merge branch 'newHistoricalScore'