Only the Start and Create pages are accessible on a mobile phone

[ttmc]

This issue was reported by @metasean on Gitter:

re: the CRAB tutorial - I tried reading it on my phone while walking to and from lunch, but only the "Start" & "Create" pages are accessible, the rest just redirect back to "Create".

Source: https://gitter.im/bigchaindb/bigchaindb?at=5a67fbec6117191e61a4e973