hacking in support for Zephyr custom data service
providing http credentials to zephyr uploader
preventing exception in photo view if photo album permission not given
adding activityUploader for zephyr strap

also, upload all heart rate date to ZephyrStrap nickname when Zephyr is connected
(rather than upload heart data to PolarStrap and activity data to ZephyrStrap).
Merge branch 'feature/zephyr-strap-support' into develop