Add GPS tracking to Kliva

[Depechie]

Be able to track a route with Kliva and upload result to Strava

Look at https://channel9.msdn.com/Events/Build/2015/3-626 for details on Extended Execution ( ExtendedExecutionSession ) to keep the app active for a long time ( during tracking )

• [ ] Be sure to verify GPS hardware to only show route tracking for those devices that have one
• [ ] Auto pause of tracking when speed is underneath certain value? ( config option? )
• [x] GPX writer to store geo locations on disk

[Depechie]

• [x] Design GPS tracking screen
• [x] Get current location of device
• [x] Request extended execution for Location Tracking
• [x] Implement periodic timer to request current location
• [x] Upload tracked ride to Strava

[Depechie]

• [x] Show current tracking on screen as route ( currently only current position dot is shown )
• [ ] Show current speed

possible design : https://www.pinterest.com/pin/423619908678573458/

[PieEatingNinjas]

• [ ] make an alternative 'Battery Saver mode' (black screen with only speed and time and stop/pause buttons).

[bartlannoeye]

I'd also increase the interval in battery saver mode to take a few less coordinates (eg. once per 5-10s)

[Depechie]

Nice design bottom right small overview current time with pause button