email and api key storage

[climbak]

• [ ] add settings page
• [x] add input boxes for email and api key
• [x] store api key in DB
• [x] refactor to use stored email and api key

[SaidPar]

We need to pull the hard coded key out of MPModel because it fails on the call to MP when it's not my email address.

[SaidPar]

add setting page will be it's own ordeal