Update the Manage Concept Drug UI

In Version: 1.8.2, the Concept Drug Form UI (openmrs/admin/concepts/conceptDrug.list) is not very user friendly. There is no search option to look up existing drugs and to show which concepts the existing drugs are mapped to. Concept Managers need to eyeball the existing concept drugs list in order to know whether a concept drug has been added or not. It's easy to end up adding a duplicate concept drug.

1) The page should have a search box that allows the user to search the drug name, description, and names of the associated concept.
2) Rename the link on the admin page to just Manage Drugs

Also keep in mind any api changes see on TRUNK-3125