Various updates to make remains work.

examples/xfce/templates/collection_feed_entry.erb

examples/xfce/templates/collection_release_mail.erb

examples/xfce/templates/project_feed_entry.erb

lib/controllers/announcements.rb

lib/controllers/collections.rb

lib/controllers/projects.rb

lib/middleware/identica.rb

lib/views/announcements.haml

lib/views/collection.haml

lib/views/collection_new_release.haml

lib/views/collection_release.haml

lib/views/maintainer_profile.haml

lib/views/project.haml

lib/views/project_new_release.haml

lib/views/project_release_update.haml

lib/views/stylesheet.sass