Added object "identity", object delete

Added the identifying_field flag as well as the "identity" variable
to the object setup methods so as to be able to present an identity
of an object as more than just "object 3," but rather as "blog
blog.adnhosts.me" and so forth.

Additionally added delete functionality.
Added form post-processing to edit (again)

Additionally slightly changed form post-processing on create, but not in any
way that should change how it works.
Cleanup, plus added type-wide subaction calls

Previously you had to define each subaction with a preceeding action name
that it was attributed to.  Now, if an action calls out for a subaction,
such as "object_updated", it will now check for $action_object_updated,
and if that does not exist, will check for it without a preceeding action,
so the sub object_updated would apply to any actions that make that call,
unless the specific action overrode this with a named subaction.