Rebuilding the site
Refactor the Gallery page.

* Remove broken links.
* Refactor the gallery page into a Cactus plugin to ease future updates.
* Rebuild the gallery page.
Merge pull request #11 from garnertb/master

Refactor the Gallery page.
Remove not implemented features from the website - user-features, admin-features
Merge pull request #12 from prabhamatta/master

Remove not implemented features from the website (user-features, admin-features)
Update Workshop links in geonode website
Merge pull request #13 from prabhamatta/master

Update Workshop links in geonode website
Removed an unimplemented feature under Interoperability - federation
Merge pull request #14 from prabhamatta/master

Removed an unimplemented feature under Interoperability - federates with open data platforms
Replace the front page image and add a laptop_frame image.
Remove the workshop folder and point all workshop references to docs.geonode.org.

* Set the workshop paths to context variables in plugins/geonode.py.
* Delete the workshops/ dir.
Change the demo site url to demo.geonode.org.
Delete the workshops directory.
Merge pull request #15 from garnertb/website_improvements

Website improvements.
Pointed quick install at ppa:geonode/testing
Added draft for 2.0 blog post
Added 2.0 release post
Added subtitles
Added line breaks to code instructions
Added missing </h2> tag