Merge branch 'master' into 1.0

Conflicts:
	Resources/views/Form/fields.html.twig

holderjs 404, use data-src instead of src

placehold it changed to placehold io for https uses

small bugs with multiple gallerys on same page and bootstrap3

Help message for crop screen and translations

saveOriginal parameter readme

Updated readme for useAsFieldImage option

small visual improvements

gallery widget and some improvements. Readme updated

translations, translation_domains, i ended up by understanding this o…

…ptionresolver thing for formtype, en and fr translation files