refactor of photo submission. Now only submits next photo once previous photo has submitted sucesfully. Progress takes into account number of images. working on #88
Merge branch 'develop' of https://github.com/avalanchedotca/CACMobile into develop

* 'develop' of https://github.com/avalanchedotca/CACMobile:
  Detect if session has expired during obs submission, log user in and prompt to sign in again. Fixes #86
  Correct orientation of photos