SpartaHack 2016 iOS App

Merge branch 'dev'

* dev: (65 commits)
  prod certs fixed
  made a few styling changees
  all bugs fixed
  submit to App Store
  final bugs fixed.
  Final build before app store. No feature or design changes. Bugs only
  last minute bugs fixed
  Prod certs signed. All bugs fixed
  All issues are fixed except for the accepting your own ticket
  PING PONG! :D
  removed help desk options
  fixed crash
  issues closed!
  One bug left. Then pull to refresh view
  user checkin is done
  Styling and checkin-checks work
  volunteer can now checkin user*
  Volunteers can now scan barcodes
  volunteer scanning is in place
  Added barcode generator library and now generate checkin barcode
  ...