Revert "Add new migration for list item uniqueness constraint"

This reverts commit 70f56a6bc4ee88511a90e5373819cd60319a9b7e.
Revert "initial migration to match live"

This reverts commit a0c88208cfe2a69d9a1258c835f4b130a5304e9f.
Add south to INSTALLED_APPS. --ch12l001--
Add South to requirements.txt. --ch12l002--
initial migration with south
new migration (with south) for unique constraint
add migration and fake initial to fabfile