Merge pull request #75 from jmsche/master

Added Enhanced image plugin
Replacing ckeditor image plugin by image2 plugin

Attention : this break the compatibility with old site. Use "image2" instead of "Image" in the toolbar
debug snowcap-admin.form.js
Merge pull request #76 from ANfactory/master

debug snowcap-admin.form.js
- Added form_localize layout: To use in association with SnowcapI18nBundle; in order to generate nice forms for translatable entities
- Fixed style for input-append form widgets
- SlugType: Fixed not translated alert