make initrock idempotent
Simplify Rockstor setup

Combine hostname field and user creation form
Scan network and setup appliance on submission of user create form
Merge branch 'issue#460_simplify_setup' of git://github.com/sujeetsr/rockstor-core into sujeetsr-issue#460_simplify_setup
Merge branch 'sujeetsr-issue#460_simplify_setup'
Add eula to initial setup
make initrock retry until network is up for a max wait of 60 seconds.
fix six version to 1.7.3