Make token endpoints more RESTful

[tahpot]

• Replace GET /auth/token?tokenId=<tokenId> with GET /auth/verify?token=<token>
• Add GET /auth/tokens/:tokenId
• Replace /auth/revoke with DELETE /auth/tokens/:tokenId
• Ensure tokens returned from /auth/tokens and /auth/token are the same

[aurelticot]

And:

• Replace POST /auth/token by POST /auth/tokens
• Update response for POST /auth/tokens by including the token details in addition to the full actual token. { token: string, tokenRecord: AuthToken}

[aurelticot]

Also check #237