Drug Regimen portlet is slow to load

The 'patientRegimen' portlet included on the patient dashboard takes too long to render.

Profiling says that a lot of time is spent in RegimenPortletController.populateModel (much of which is in getConcept(String), so this may be sped up by caching concepts). Also, the drugOrder.js.withjstl file seems to take a non-trivial amount of time to process. (Since this js file is not cached, that's a problem.)

From my recollection of the code, it is probably worth rewriting the whole portlet rather than trying to optimize it in its current form.

(Make sure you are looking at a patient that has drug orders, and that the 'dashboard.regimen.displayDrugSetIds' global property is set.)