Add basic requirements information.
Update README.md
Add support for viewing the meta-gallery ":none", i.e. photos not in any galleries.
Add gallery statistics.
Refactor javascripts to be within a single vlumi namespace
Fix title for the statistics page.
Retrieve default values for new photos to be added from the top of the galleries being added to, or the base collection if none.
Restructure the javascript code a little.
Refactor javascript for better readability.
Fix typo in admin.rb.
Update Colorbox to latest upstream v1.5.8.