Move recount logic into respective form classes

Change default archive value to `False`
Integrate default templates for Context- and View- Resources

Support for the templates occurred in cbmi/avocado@d5a46388. This
is a transparent way to ensure a client has a starting point for
either the context or view.
Remove remaining redundant `rel` attributes

See 71d6c108
Replace deprecated Django sha_constructor with hashlib
Add cors module with various utilities for augmenting a response