Need to be able to edit drug dosage forms for concept from within the dictionary editor.

As it currently stands, there is a very rudimentary interface for adding drug dosage forms to concepts accessible from the administration page, but it would be vastly preferable to actually edit those in-line from within the dictionary editor. The interface should allow entry of one-to-n drug rows for a given concept.

Basically, we need to merge "manage concept drugs" with the main dictionary editor.

The conceptdatatype dropdown currently has a trigger so that different sections show up based on what is chosen. The conceptclass dropdown will need the same thing for when Drug is chosen.