Simplify price ribbon styles.
Remove redundant bounty list sorting. Sorting is now done when bouties are retrieved from the database.
Remove redundant private bounty filtering from the bounty index view.
Replace a confusing "unless..else" statement with a readable "if...else".
Clean up complex if statements in Bounty.viewable_by?
Update a comment in Bounty.viewable_by to be clearer.
Streamline Bounty.voted_on? and rename it to Bounty.vote_by to reflect what it actually does.
Use model relationships instead of passing around raw object IDs in tests.
Calculate a bounty's score on demand rather than trying to store it in the database.
Update Bounty model annotations.
Decrease the number of bounties fetched by BountyController#index to page rendering snappier for less powerful clients.