Update deployment script for nginx and gunicorn
Ignore static files
Change host settings to parameters
Remove manual install of google transitfeed

This has been added to python requirements to
avoid installing on every provision and since
we have to use some of its functions anyhow.
Do an angular build if this is a deploy to production

Running grunt build handles the minification and
and setup of the angular project for deployment,
placing the necessary javascript files in the dist/
directory
Add geotrellis to setup, add gt prefix to path