When MailMessage portal type is not installed, then temp mail messages will use
this class. The plan is still to remove the class, but for now just remove this
method that can overload Event.send

This rely on a change in erp5_base where Event_send does nothing and MailMessage_send sends email instead, otherwise mails will be sent for all started events.

We only want to send an email for mail message portal type

We always generate the event upon start. User can pass another transition not to generate the event.

Resource.asPredicate was broken and Base.asPredicate is useless.

This way when "full consumption detail" is used, consumptions that are on a possible variation that was not selected in definition are part of the consumption cell range and are still reported under this variation.

From Chromium 31, pressing enter key to select ListBox page submit the form
through JS (submitFormOnEnter) *and* wrongly on the default button, at the end
following HTML5 behavior (4.10.22.2 Implicit submission).