Add classifying actions to "Bulk actions" pulldown menu

[danxoneil]

On this page: http://foodborne.smartchicagoapps.org/admin/tweets, when selecting multiple items, add more bulk actions. For instance:

Classify: off-topic
Classify: not Chicago
etc

[srobbin]

I think we may have to work with @corynissen to figure out how to get this info back to the classifier.

[corynissen]

Can you leave a database, mongodb, or dynamodb, csv file somewhere, or some other way to expose the data and I'll take care of the rest? I just need the tweet text and the manual classification. It doesn't matter to me how I get the data, just as long as it can be read from a random EC2 instance.