Comm: simplify and clarify Comm controller
Radio Config: Restart telemetry mode on save and close

- Comm interface has been updated to allow
  restarting telemetry mode when the Radio Config
  view is dismissed after a save.
Start telemetry when app becomes active
Merge pull request #82 from fightingwalrus/igcs-141-easily-restart-comms

Igcs 141 easily restart comms