Fix a notice of undefined property

Notice: Undefined property: Structure::$sort on line 289
Merge pull request #201 from dtrebbien/patch-1

Fix a notice of undefined property
Adding a changelog.

A listing of changes via Git is too verbose, so best to put the
highlights in a single file.
Dropping "state" from description.

There's no reason to narrow unnecessarily the application of the software.
Rename default page template.

I neglected to sync this change weeks ago. D'oh. Per #202.
Check that terms are an object, not an array

We've moved to storing terms as an object, not an array.