Housekeeping

I'd noticed a couple of things in `ArchetypePropertyValueEditor`:

* The `PropertyEditor` attribute wasn't referencing the alias constant
* Within the nested `ArchetypePropertyValueEditor` class, the `LogHelper.Error<T>` was referencing `ArchetypeHelper` instead of itself.

The assembly references "Archetype.Tests" and "DatabaseSizer" projects had "Copy Local" set to true, which ended up copying everything to the `/bin` folder during a build. Hopefully this cleans it up a little.