small documentation update concerning feeding in Data with AMQP
Don't error on GET requests to /browser/search/
Clean up settings now that graphite requires Django>=1.4

``DATABASE_*`` is no longer relevant.

Also removed some compatibility code for older Django versions than 1.4.
Syntax fix
Merge pull request #512 from brutasse/fix/database

Clean up settings now that graphite requires Django>=1.4
Merge pull request #459 from BobClaerhout/patch-1

small documentation update concerning feeding in Data with AMQP
Merge pull request #460 from draco2003/patch-1

Don't error on GET requests to /browser/search/