Merge pull request #14 from jtwalters/fix-navbar

Fix navbar and tweak space around icon-user
Ignore .ruby-gemset
Implement streaks

Display streaks when showing tournaments. User has a streak when at least
last 3 games ended same way (win or lose). Winning streak is marked with
green badge, red badge for losing streak. The badge number represents
streak's lenght.
Fix length typo
Temporarily use a rails 4 branch of whenever

Should fix #16
Add commented email preference

Closes #17
Merge pull request #15 from krasio/streaks

Streaks
Remove accidentally adding a new table to schema after horrible rails 4 hash syntax update
Add ability to delete tournaments
Remove redundant/unsafe Tournament.find

"This is a bit redundant and quite unsafe. The #find_tournament_and_rating_period before filter already finds the tournament and it's scoped to the current user correctly"
Merge pull request #19 from jtwalters/add-tournament-delete

Add ability to delete tournaments
Stop tournament edit form from deleting tournaments
Fix defending challenge scoping for ratings
Merge remote-tracking branch 'upstream/master'