* Retools the terminology set by Artesia::Datastream::UOIS.add_uois_terminology to make it a little less verbose.

* Adds "creator" to UOIS terminology.

* Separates fixtures from teams_asset_files/ into individual directories, and fixture files containing individual assets for testing Artesia::Datastream::UOIS. The complete fixtures with all assets are now in their respective directories (e.g. spec/fixtures/teams_asset_files/zoom/zoom.xml). Note that the fixtures for individual assets do not represent all of the assets from the complete fixtures, just a subset for easier testing.

* Refactors and adds a bunch of tests to spec/lib/artesia/datastream/uois_spec.rb to test the terminology added by Artesia::Datastream:UOIS.add_uois_terminology using the new fixtures for individual assets.

* Adds method uois_from_fixture to spec/spec_helper that creates an instance of Artesia::Datastream::UOIS with fixture data.

* Removes a test from spec/features/homepage_visit_spec.rb that was failing because of absence of blog in basic-ingesting branch.

Closes #141.