Unite `/api` services to one mega service.

[godd9170]

As it stands, the API gateway can't point one domain, to multiple AWS apis. Well, it can, but they need to have unique 'base paths' which really sucks.

The only way I can see around this is to re-bucket /account, /contact, /event and /encryption all into one /api service.

[godd9170]

Here's the Gameplan.

One master serverless.yml at the root of the /api folder. We can pretty much copy the function definitions ymls from each of the sub dirs and thanks to serverless' new function level package inclusion/exclusions we can just make each function ignore the sub dirs of the other functions.

reasons why this is sick:

• [x] the new 'contract' infrastructure proposed in #33 can share a common Error Response
• [x] The 'Payload Verifier' in #17 can be some kind of mutual 'Request' Class
• [x] we can share a common tools.py instead of having 3 floating versions
• [x] Our SSLCert on api.saasli.com can be used across the entire service.

[godd9170]

Word of the wise, when you only want to deploy the function you're working on (and it's got it's stack already built)

sls deploy function -f account

it's fast like ⚡ too