Added basic shoulda matchers for phase and challenge specs
Merge branch 'development' into spec
Merge branch 'development' into spec
Added forms test for challenges
Changed layout title text
Merge branch 'challenges' into development
Made a set days rake task that sets day of the week for week's assignment
Merge branch 'challenges' into development
Red to green challenges index
Created a helper for days of the week.  considering dropping Default day of week table and renaming levels