Forms: Update multifile upload.

fotos/forms.py

@@ -14,7 +14,7 @@ class UploadedImageForm(forms.ModelForm):
         model = UploadedImage
         fields = [ 'files' ]
         widgets = {
-            'files': ClearableFileInput(attrs = {'multiple': True})
+            'files': ClearableFileInput(attrs = {'allow_multiple_selected': True})
         }
 
 class UploadedFileForm(forms.ModelForm):