increase Capybara.default_wait_time from 5 to 6 (#12822)

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11968 e93f8b46-1217-0410-a6f0-8f06a7374b81
German translation updated by Daniel Felix (#14277)

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11969 e93f8b46-1217-0410-a6f0-8f06a7374b81