Send topic should take advantage of some AJAX and overlay and whatever

Signed-off-by: emanuele <emanuele45@gmail.com>
Updated jQuery ajax call according to #570

Signed-off-by: emanuele <emanuele45@gmail.com>
Some more nice effects to the overlay'ed send topic form

Signed-off-by: emanuele <emanuele45@gmail.com>
Merge pull request #728 from emanuele45/send_ajax

Send ajax