Readability & whitespace

* Mostly whitespace changes
* Move one long message into a variable before putting it into an object
More whitespace cleanup.
Better badge instance deletion test.
Fix milestoneBadges->milestones table relationship
Implement Milestones.findAndAward()
Whitespace
Milestone badges triggered from badge issuing.
Merge pull request #112 from mozilla/95-milestone-auto-awarding

Milestone auto awarding [closes #95]