adds associations to Match model and changes uppercases in model and db migration
changes associations and uppercase letters
adds a drop-down menu to matches form
adds team_a_id and team_b_id to matches db table
corrects some problems with team_a_id and team_b_id
removes team_name column from players table in db
associates correctly teams and matches
solves some conficts
shows teams names instead of ids
adds match winner helper method
refactos match winner helper method

in order to move winner computation logic to match model
Merge branch 'sommatoria2' of github.com:fievelk/unisoccer into sommatoria2
adds 'Total goals' in team/index view
adds 'Total goals' in each team/show view
improves total goals sum for teams
improves team method syntax
Merge branch 'sommatoria2' of github.com:fievelk/unisoccer into sommatoria2
adds matches rss feed
moves notice message to layout
refactors match model