Restore the page_status partial that was removed by 8e106a2a5f475d0016730d1f3046f0d674c996c5

Fixes missing partial error in admin/pages#update
Fixes the position of the page status name and icons.
Build against Rails 4.1.1
Ensure that at least the default regexp for external link url matching is present.

If one has a custom config file and does not have the new link_url matcher yet, the admin view throws a javascript exception.
fix Page#previous_page

because of a faulty ordering it was always displaying the first, not the previous page
Merge pull request #535 from zambot/fix_previous_page

Fixes Page#previous_page
Split the tinymce initialization into a global and a custom "per page" part.

This splits up the TinyMCE configuration into a global part, that gets evaluated on every full page load and a custom part, where only these custom tinymces get initialized that needs to be on that particular page.

Hopefully closes #500, closes #531 and closes #536
Set the current Alchemy javascript locale on every request.

This ensures that switching the locale is also represented in javascript translations.