Added fixes for the "browse" functionality in the search component:
-- Removed all of the extJS and replaced it with jQuery. 
-- Added jQuery datatable control 
-- Added Clinical Trials tab back in
-- Removed custom paginate buttons for Pathways tab (use datatable)
-- Removed need to select the data source in pathways 
-- Search capability included with default jQuery datatable control
-- Added bind variables and cleaned up queries
-- Cleaned up code