Implement Mock API Authentication

[nfloersch]

We need to implement the appropriate API security layer so that the c[RUD] functions which should have security are protected.

For example in the YAML file... when we see...
security:
- appid: []
- appkey: []

We need to be able to accept and verify the appid / appkey against some service or back-end that keeps track of and will validate incoming appid and appkey values.

For now we need to mock this up and have a single valid appid / appkey ... or say that any appid and appkey passed in is valid, but that not passing one when we need one is invalid.

In the future we will implement the linkage to a real authentication system such as using GitHub's authentication API or Google or Facebook.. or our own.