Merge pull request #38 from ningosi/master

CD4% included in the determination for due for CD4
Added ability to FormManager to pick up tag handlers from registered components
* Removed ifMode as that fix is now in HFE core
Replaced the widget used for location searching to fix bugs and speed up page loads
* Added HFE tag handler to override <encounterLocation> to use new widget
* Added search configuration to JS layer to tell kenyaui how to search for locations
* Changed simpleLocation to return {id,name,code}