Merge pull request #8 from tyarkoni/master

Assorted fixes
Added feedback reporting
Added Google Analytics tracking.
Change the default colour scheme for single maps
Added South for database migration
Move contrast related fields from collections to Images
Fixed forms after the model change.
Fixed author name extraction for single author papers.
Added link to the paper.
Added divider for the formsets
Added link to cognitive atlas.
beta branding
added infor about meta analysis
Revert "Added divider for the formsets"

This reverts commit 8712bcf350afddb2e18af9bfd3a2819286a64d8c.
Fixed security bug