[SingleUpload] JS: fix type check when no file given
added 4 missing double quotes
Added the file back into the form data (lost onbind)  for NotNull validation
Adds the file back only if the file property is not already populated
Took off unnecessary indentation.
Update form_javascripts.html.twig
Bugfix if own subtype of afe_single_upload

Fixes a bug when creating an own form type which has afe_single_upload as a parent.

When creating a form type with afe_single_upload as parent the file on the entity is not set correctly. Instead it is set to array([file] => [UploadedFile]).
This happens because the SingleUploadSubscriber only checks the actual form field onto it's type, but not the parents. So if you extend the afe_single_upload its behavior changes because of that.

The fix just recurses over all parents and checks if the form extends from afe_single_upload.
Merge pull request #120 from svengau/patch-1

added 4 missing double quotes
Merge pull request #121 from satiricon/empty-file-validation

Fixed empty file validation at form edit.
Merge pull request #122 from kufi/patch-2

Bugfix if own subtype of afe_single_upload
Added missing use
Merge pull request #123 from kufi/patch-2

Added missing use
Merge branch 'master' of github.com:avocode/FormExtensions
fix image display