add validation rule for group name
add Languages add/edit/delete actions
add Language validation rules
implement confirmation check on delete links
add Languages add(edit) view
add list hover effect and darken the hover color
add default order
change default position to 9999 (on add)
add language sorter button
enable .json and application/json requests
make languages sortable via jquery and ajax
add a generic jquery based flashMessage method
add global ajax callbacks to dynamically display flash messages on ajaxSuccess and ajaxError