* remove header used for backwards compatibility in KV mounts, and use v1 paths for v1, v2 paths for v2
* make the model hook always run
* simplify adapter & serializer code for secrets
* update tests
* fix lease tests
* address review feedback
* add ember-cli-content-security-policy
* only enable client side CSP when not in production - the go side handles this otherwise
* add service that handles and stores CSP violations via the securitypolicyviolation event
* update auth form component to show a specialized message when there's a CSP error
* move to computed prop for showing the CSP error message
* fix typos