Add metrics

**NOTE**: depends on https://github.com/tidepool-org/platform-client/pull/10

**Events tracked**:

- Logged In
- Signed Up
- Logged Out
- Viewed Care Team List
- Viewed Data
- Viewed Profile
- Viewed Profile Create
- Viewed Profile Edit
- Viewed Account Edit
- Updated Account
- Updated Profile
- Clicked Create Profile
- Clicked Own Care Team
- Clicked Other Care Team
- Clicked Navbar Logo
- Clicked Navbar View Profile
- Clicked Navbar Upload Data
- Clicked Navbar Logged In User
- Clicked Back To Care Team List
- Clicked Back To Data
- Clicked Back To Profile
- Clicked Edit Profile
- Clicked No Data Refresh
- Clicked No Data Upload
- Clicked Show Two Week Values
- Clicked Hide Two Week Values
- Clicked Go To Most Recent `{fromChart: daily/weekly}`
- Clicked Switch To Settings `{fromChart: daily/weekly}`
- Click Chart Refresh `{fromChart: daily/weekly}`
- Panned Chart `{fromChart: daily/weekly, direction: forward/back}`
- Clicked Switch To Two Week
- Clicked Switch To One Day
- Double Clicked Two Week Value
- Clicked Message Icon
- Replied To Message
- Closed Message Thread Modal
- Clicked Message Pool Background
- Created New Message
- Closed New Message Modal