include locale in cache key
prepare for 1.4.2 release
Merge pull request #123 from screenconcept/hotfix/fix_localized_page_cache

Hotfix/fix localized page cache
prepare specs
add migration
include new attribute in page form
update disable fields in page form
add validation for new redirect_url field
create migration to update redirect_pages
update link method to return absolute url_redirect if page is a redirect page
return always url to make a real redirect
implement redirect in pages controller
correct syntax
do not clear url in redirect pages
define translated find_by_<attr>_<locale> methods on class

were defined on instances

e.g.: Page.new.find_by_slug -> Page.find_by_slug
correct use of blank? method
correct migration
remove whiteline
update migration
add changelog entry