Workaround BLE being required for low power sleep
Workaround BLE being required for low power sleep

On nrf51822 at the moment, sleeping without an initialised BLE object
causes a busy (power-consumptive!) sleep.

This patch works around this by ensuring we always have ble init'd
even when we're not actually being a beacon/advertising.

Once this has been fixed, this patch can safely be removed

roywant/EddystoneBeacon,roywant/EddystoneBeacon