[cosmetic] improved front view (closes #13)
[evol] added artwork view and now use the new image frame in all views
[evol] created display_artwork_frame() helper function and now use it in the welcome page + created a set/group tree view with it too
[evol] added image size info in the 'latest 10 artworks' page (closes #7)
[evol] added a small margin around image in the 'latest 10 artworks' page
[fix] ensure displaying final image in the 'lastest 10 artworks'
Initial version