[IMP] mail: chatter: Send message / Log a note tooltips improvements, to better explain to the user why the world is about to collapse into a molecular singularity.
[IMP]Added auto_confirmation field, seted default is true,override create method of event and event registration, to confirm event and subscription if auto_confirmation field is true.

[IMP]seted default value for auto_confirmation in ir_values and get values when create event and registration.

[IMP]Maked if condition one liner in registration create method.