In preparation for the final changes in separating actions from their

views, this change pulls out some of the view-specific state from the

actions and sets them in the renderers instead. This includes the

has_parent flag and dom_element_id (which previously required a call

to get_dom_element_id()).
BaseAction.get_dom_element_id() and the JavaScript Action model's

domID attribute are now both deprecated.
There's no good way to shim domID, as it's an action model attribute

and is fundamentally incompatible with per-view dom IDs. We only use

this ourselves for menus, and it doesn't appear we ever actually do

anything with it anywhere, so we're just scrapping it.

Unit tests pass.
Tested that all actions displayed and worked correctly.