fixed submenu position behind bug
modify db schema, add fields: import_id, imported
add import product by uploading spreadsheet file, ajax'd
modify style, fixed next/prev step bug
git ignore aptana .project file
schema: add discard_from, discard_by to products,brands,...
add static testing html file
finish coding all interfaces of import_sheet controller
add jquery dataTable css files
modify for dataTable support
modify products.index page to normal state