Continued updates

Noticed that WIP commits from my fork was cherry-picked so here comes
the missing part.
Merge branch 'it' of https://github.com/alepore/spree_editor
Remove unused translations.
Fix dependencies.
Add generated ckeditor intializer and models to extension for extending w/other extensions in Rails 4.
make ckeditor work with rails 4 assets pipeline in production
Remove s3support for spree 2.2.x
Config settings dont exist anymore.