Merge pull request #22 from lukegb/feature/bigdecimal

Switches to using BigDecimal and also fix exception for first acceptance
Merge pull request #23 from lukegb/feature/show-purchase-id

Adds purchase ID to table and detail pages
Merge pull request #24 from lukegb/feature/delete-purchases

Allows users to delete their purchases
Merge remote-tracking branch 'origin/master'
Fix bug with not being able to edit a person
Merge branch 'master' of git://github.com/alown/eMonies

Conflicts:
	app/controllers/people_controller.rb