get bio page working again
get changing Artist info working

Using the Change Info page is now working again.

Additionally, it now has a Paperclip file field to upload a photo.
get artwork deletion working

Artworks are now associated with Artists through a has_many
association. Deleting an artwork through the gallery functions
again.
new artist_edits_artwork steps
artist_uploads_artwork tests
all tests green!

Rewrite the artist_deletes_artwork, artist_edits_artwork, and
gallery_display tests.

Move the GeneralHelper and AdminHelper modules that were in Cucumber's
world.rb into their own files so they can be included elsewhere. Include
GeneralHelper in RSpec's config block.

Finish unit tests for Artist and write unit tests for Artwork.