design payment code with redundant data
mail on registration
Merge branch 'master' into csv-payment-codes
add file upload form and dummy processing
find registration and amount paid
finish uploading csv's and updating payments
mention payment deadline in mail
add edit field for bank account number
Merge branch 'master' into csv-payment-codes

Conflicts:
	Isengard/db/schema.rb
fix newly-allowed nil-capacity and don't mail on fails
Merge pull request #161 from ZeusWPI/csv-payment-codes

Design payment code with redundant data