docs, add the port 8000 to paver start mode
add django debug toolbar
Update domain name to demo.geonode.org in fabfile.py
Remove the cleardeadlayers reference from the Django-apps page.
Improve the settings documentation.

* Add a reference to settings in the reference toc tree.
* Reword the description of the Documents app.
* Reword the description of the Uploader's BACKEND setting.
Document the GeoNode paver commands (Fixes #1169).
fix typos
Merge branch 'master' of https://github.com/GeoNode/geonode
small additions to the geonode_project usage
show complete extension for invalid files
fix a not closed div
add few lines on the issue tracker
remove the devprocess reference