Add Instance to admin interface and improve appearance.
Setup templates to inherit from base.

Created a base template and some other templates to inherit from base.
Moved the contents of the map demo from index.html to map.html in order
to make the index a landing page. Added the necessary changes to the
urls and views to make these pages accesible.
Fix settings url and view. Move and update script tags.

Moved script tags to the bottom of the body element for performance.
Add decorator to settings view so the URL will work for instance ids.
Updated to latest jquery and removed protocol expression in script
tags to let the browser choose between http and https.
Merge pull request #8 from steventlamb/topic/add_templates

Topic/add templates