adds the ability (and an example) of how to shoot yourself in the foot with nested regions within snippets.
sets wrapping by default on text regions, and updates comments on regions to include configuration.
general updates, nothing important.
make model instances automatically add themselves to the collection.
adds ability to clear the stack.
removes region options from what is serialized to the server (it should already know).
allows loading data back in (same format as what's saved) to load snippets / values etc.

- adjusts some logic around re-rendering snippets in core/region and modules/snippetable as part of the load process and reload process.
makes panel draggable.