Adapted to ToolboxFile in core.
Change dca. See MetaModels/attribute_file@1ce3dd3e6ca854db5d2618ec8e7cacfb4b873a99
Add a "submitOnChange". See MetaModels/attribute_file@354aebc0c6687297304771d7fcc7707757ea36cf
Add the file picker and some missing language tags for english.
The config now does "deep assignments"
See https://github.com/MetaModels/core/issues/193
Merge branch 'dev' into contao3
First iteration of Contao 3 compat with namespaces.