updated javaScript in utils.js to run QueryCateries.java servlet upon user selection of Browse Catalog link;
updated displayCategories.jsp to run QueryByCatID.java servlet upon user selection of any category;
removed form/button from browseCats.html since no longer needed;
removed form/button from searchProds.html; ***search button still needs to be directed to QueryByProd.java servlet;
***next to do: modify result when Electronics category [empty] is selected to notify user that no products currently exist in the Electronics category