- Refactor UI (use Material Design and new font, drop to single style.xml)
- Do the pump comms using an IntentService in a separate thread
- Add extra OTG check
- General clean up and refactoring (improve naming and code).

Code cleanup and minor refactoring to improve maintainability and the ability to internationalise the app.
Fixes #43

Removed a whole bunch of code we don't use. Everything is still working. Quick! Commit, before you break something!

Notifications fixed to be compatible with api15
Running MedtronicCnlService.doReadAndUpload from UI thread

Fix #16 - show registered USB sticks in the registration activity
Fix #14 - show successfully registered devices after CareLink login.

Make only the log part of the UI scrolls.

Fix #12

Add comms retries when entering control mode, to handle the scenario where the app is launched with the plugging in of the USB stick.

Fix #6

- Refactor MedtronicNG class names
- Add support for uploading Pump status to Nightscout (pump battery, IOB, reservoir level)

Remove hardcoded keys.

Removed all options to use Dexcom or Medtronic CGM (sorry arbox0).