[#75987566] make photos not required to create book.
[Finishes #76660632] Added twitter-bootstrap-rails-gem for the generatedviews
[#75986988 #76271294] added rolify and cancancan gems
[#75986988] Admins can approve books by checking 'active'
added admin role
added approve book ability on admin users
hide active checkbox for all except those with the approve ability
added a book in the seeds.rb file for convenience.
Use rolify for admin checking
[#75986988 #76271294]
Use launchy gem
Fix view specs to work with cancan
[ #75986988 ]
capybara/cucumber tests for approving books
[#75986988]
added .html.erb to index file
Merge pull request #12 from psytau/roles-etc

Roles etc