Added footer to base template.
Created a jdpages app for customized jd page models.

This is still very experimental. Trying to find out how to best use Mezzanine for our existing pages.
Initial page processor for jdpages.

Adds the latests blogpost to a JDPage view context.
To be shown in the right sidebar of jd pages.
Extracted the social media icon html to a separate file.