Exclude startup and shutdown IO.
Merge pull request #38 from vitillo/nostartup

Exclude startup and shutdown IO.
Add some FirefoxOS-specific dimensions

Make it easy to filter FirefoxOS telemetry data:
Add a reason of 'ftu-ping' for First Time Use of fxos
Add an application of 'FirefoxOS'
Merge branch 'master' of github.com:mozilla/telemetry-server
Update the AMIs with updated FxOS schema dims.
Ignore the old format.