Enable use of flatpages app within econsensus. This allows pages
to be created from the admin interface.
Ensure bullet lists in flatpages show up as such
Add entry point for flatpages: if admin has created an "about"
flatpage then put a link to this at the bottom of all pages
Ensure Markdown is installed, as it is used to render flat pages
Provide link to _all_ top-level flatpages, not just "about"
Restyling of links to top-level flat pages
Rework in custom flatpages tag in light of code review
Minor code tidying in light of flatpages code review
Make sequence of links to top-level flatpages into a list (ul)
Merge branch '1085351_site-pages' of https://github.com/rdn32/econsensus into rdn32-1085351_site-pages

Conflicts:
	deploy/pip_packages.txt
	django/econsensus/econsensus/settings.py
Fix bugs caused by merge