setup.py retab and clean up

This doesn't actually change anything just fixes the indentation and
alignment, removes unused imports, etc.
Start CKAN 2.0 version of this plugin

Basically delete everything and start again. So far the new 2.0 version
just has a custom template that tweaks the header links, that's all.
Add footer links to static pages

Content copied from old CKAN 1.3 DataGM site
Add new DataGM logo and custom CSS for logo
Add a gitignore file
Add all 19 organizations to the front page
Workaround a crash in CKAN's organization_list()
Add popular datasets and recent datasets to front page
Add some space between rows on front page

Bad inline style hack
Use "Unnamed resource" for unnamed resources

Instead of the URL
Make datasets look nicer on front page

Use the core package_item.html snippet, includes things like badges for
file formats.
Add migrate_groups_to_organizations.py script

This was used to migrate DataGM's groups to organizations on
http://datagm2.ckanhosted.com/
Use the package_list.html snippet

This just reduces template code duplication