put back the nullable in Proposal columns
clean up
convert all the other fields which needs html repr to MarkdownColumn
fixes for MarkdownComposite
fixes for MarkdownComposite
migrations to use MarkdownComposite
New space link only for siteadmins.
Fix title display on pages
Simplified layout.html; more markdown
Change library import order
Require sections to be public.
Support for feedback on sessions
remove db param in MarkdownColumn
Merge branch 'master' into composite-column

Conflicts:
	funnel/models/__init__.py
	funnel/views/__init__.py
Markdown flags are no longer required.
New import location for MarkdownField.
Merge pull request #57 from hasgeek/composite-column

Composite markdown columns.
MarkdownField updates; use user's phone number
Stylesheet fixes
Merged master