Adds first Capybara tests (#12822).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11270 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merge branch 'master' of git://github.com/redmine/redmine
Copy database.yml before running bundle install
Run test:ui