new arch and content arch models
add constructors to Arch
test cases for Arch/ContentArch models
add cp_content_arch to liquibase changelog
Add Arch model and update Content model to use it
fix typo in db add-content-arch db changelog
add get/set arch for Content json model
add contentArch to Content model
get/setters for ContentArch model
add arches to Content model json for ent certs
Add a test arch to the default Content
Add indexes and fk's to liquibase setup
get rid of contentArch join object

setup joinTable relations via hibernate
handle creating contents with an arches list
add archs to ruby candlpin api and import script
Use the correct Arch object
add an ArchCurator to ContentResource
populate some samples into arch table

remove 'postgresql' directive for new fk
changelog
add ArchCurator to ContentResourceTest
add an example content with arches to test_data