Kateryna Kostiuk authored Oct 23, 2017 and Andreas Traczyk committed Oct 27, 2017

Add back button to initial walkthrough

Change-Id: I25e2dd03d8ae862fb2a23d61c6e6289ecc01e4e7
Reviewed-by: Andreas Traczyk <andreas.traczyk@savoirfairelinux.com>