color feature: ssong25, hlim10

color change to habit, todo, daily
paulkim6 jcheng26: Added database connection to Reward Activity
lchen59 kwchen3 finished HabitsDB and tests, modified equals function for Habits
lchen59 kwchen3 finished DailiesDB and Tests
lchen59 kwchen3 finished ToDoDB and tests
paulkim6 jcheng26: Refactored unused lines in manifest
Merge remote-tracking branch 'origin/master' into new_US11