Merge branch 'master' of https://github.com/m0hamed/se-hackathon
Add utility methods to Hackathon

Storage paths and currently active singleton hackathon
Merge branch 'master' of https://github.com/m0hamed/se-hackathon
Added done to task
Changed the way claims work and added a finsh model
Add level to hackathon
Fix methods unlocked? and claimable? for Task.
Fix Task#unlocked?, check if hackathon is active.
Changed the way finish is stored
Merge branch 'master' of github.com:mnzaki/se-hackathon

Conflicts:
	se-hackathon/app/models/task.rb