Add descriptions to SRP routes and add response validation where missing
Merge pull request #46 from mozilla/more_docs

Add descriptions to SRP routes and add response validation where missing
implemented /sign with hawk credentials

uses the signToken to derive the hawk
tokenId and reqHMACkey as specified:
https://wiki.mozilla.org/Identity/AttachedServices/KeyServerProtocol#Signing_Certificates
removed extra JSON stringify/parse
added /sign tests with invalid data

the payload validation test will fail until hapi is fixed.
see https://github.com/spumko/hapi/pull/949
Merge pull request #47 from dannycoates/signCert

implemented /sign with hawk credentials
removed password login and accountToken

Also commented out reset tests until resetToken
is implemented, and refactored login tests.
Added getEntropy endpoint at /entropy
Merge pull request #50 from MrDHat/getEntropy

Added getEntropy endpoint at /entropy
Merge branch 'housekeeping' of https://github.com/dannycoates/picl-idp into danny-housekeeping

Conflicts:
	test/integration/account.js