imprint model stuff
Some things are sort of functional
Mostly good, some tests are broken
Fixed stuff up
Merge branch 'develop-nigel' into develop

Conflicts:
	db/schema.rb
Fix tests after merge
Fix bug where imprintable line item names with weird characters would mess up deletion
Clean up some more stuff

Remove sizes in imprintable line item form,
Add description to standard line item display and edit form,
Deleting a job now asks for confirmation,
Delete button for standard line item is now lined up with the imprintable one,
Line item table headers are no longer all-caps
Merge branch 'develop-nigel' into develop
Correct schema
Fix small overlookings in specs
Fix small overlookings in specs