Refactor to use sum method
Change business logic for project expiration
Change from source option to class_name
Move project display methods to helper module
Fix date helper methods
Add tiers to seed projects
Fix error when no user logged in
Fix sum method on User model
Pluralized project number in User profile page
Merge branch 'methods' of github.com:smithad15/crowdfunder into methods

Conflicts:
	app/models/tier.rb