This commit fixes two problems:
* Clicking on the save button of a web_editor dialog closed the dialog
two times because the button was created with the flag "close: true"
and binded to a handler which closes the dialog. This also prevented
to extend this handler by placing the this._super call in a deferred.
* Some web_editor dialog extended the save callback but forgot to use
the this._super, which prevents the "saved" event to be triggered
(currently not used anywhere but useful for custo and master).
qsm-odoo
7a77209149