removed EnumerationsController#list action

--HG--
rename : app/views/enumerations/list.html.erb => app/views/enumerations/index.html.erb
Extracted new_subclass_instance method to a module.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@8183 e93f8b46-1217-0410-a6f0-8f06a7374b81
resourcified enumerations

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@8189 e93f8b46-1217-0410-a6f0-8f06a7374b81