Allow user to choose whether or not to delete item(s) recursively

Display a popup with a checkbox that allows user to choose if he
wants or not to delete a item (or a list of items) recursively.

Signed-off-by:
 - Alan Evangelista <alanoe@br.ibm.com>
 - Andrea Bucci <andreavb@br.ibm.com>
 - Eduardo Bacchi <ebacchi@br.ibm.com>
 - Nathan Ozelim <natoze@br.ibm.com>
Merge pull request #967 from alanoe/alanoe/add_recursive_option_on_delete

Allow user to choose whether or not to delete item(s) recursively