Comm Controller: improve telemetry re-connect
FWR: Dissconnect reconnect finally works

- Mainly a timing issue around the accessory
- Tested three scenarios: cold start,
  from background and disconnect/reconnect
  of accessory from the running app.
Unit testing: Migrate to XCUnit from OCUnit

- Mirate to XCUnit and fix test target so it
  compiles.

- Remove random iGCS code files from iGCSTests
  target (causing app not to build)

- Add missing wireless accessory and gamekit
  entitlements

- All tests are passing.
Merge branch 'igcs-53-detect-fwr-configure'