Remove requirement of Build for DecleX Actions Holders

[smaugho]

To extend the creation of Actions not only for event-based actions, but also for normal actions (similar to beans), remove the need to have a build method, in that case, DecleX should automatically call all the things that would be in this build method, when the action ends.

[smaugho]

The requirement to have a build method will be keep for now, like this it is ensure to have also an event to continue, and the action can be used for what is done... Later Beans will have actions, and with this they can be used to create another type of Actions where a Build method is not required.