support gui config for the CDH template
start to tidy location of resources (bad form to put these in root, we should move the others)
fixss to start.sh to make it more portable (some OS's need double square brackets), and more usable (accept an unnecessary "--location")
misc tidies and mainly comments about more tidies we'd like to ahve
use jclouds 1.6.0
easier to use start.sh (forgives --location supplied but does not require it)