Add status component

[shaunmulligan]

It would be nice to have a status bar widget/component that reflected the state of things like:

• GPS fix
• is a heart rate monitor connected
• is a power meter connected
• battery level
• internet connectivity (wifi or cell)

I think just having some small icons in the top right that pulse when there is no connection would work.

1.) Not sure if there is an easy way to determine GPS fix since the android API fuses data from multiple things, but perhaps we could get the location accuracy and just have a cutoff for that?
2.) For the sensor we could periodically pull the first of each type of sensor from the DB and then just run the isPeripheralConnected method.

[craigmulligan]

I think using the Location accuracy is a good proxy for a fix.