Revert "Upgrade to django 1.6.4 (bug 1005911)"

This reverts commit ee1c2fae26cb48fb2335b0b0c742214026e4a0fc.
Support multiple pay acct. in lookup (bug 1005261)
Merge pull request #2054 from kumar303/multi-lookup

Support multiple pay acct. in lookup (bug 1005261)
Replaces broken sorting logic in queue_updates with similar code to queue_apps.
(queue_apps only does waiting time desc - other sorts are broken)
Update SellerBoku in Solitude (bug 1002767)

- Check if a SellerBoku for a SellerProduct exists
- If it doesn't, create it
- If it does, update it
- If there are more than one, log and raise an exception
- Tests
Merge pull request #2047 from JaredKerim-Mozilla/1002767

Update SellerBoku in Solitude (bug 1002767)
Cleaned the AMO out of apps/devhub/ (bug 1003277)
use a more specific listing selector (bug 1009623)
Get back on nose pypi releases
Fixed tests from AMO devhub removal
Merge pull request #2057 from eviljeff/974544b

Replaces broken sorting logic in queue_updates with similar code to queue_apps.
AMOectomy of apps/versions/

Note: Depends on the devhub cleanup branch