[Dropzone] Multiple uploads only show single file and no possibility to add more files

[simonsolutions]

As already discussed and potentially solved in this PR #512:

When set the dropzone to allow multiple files, it works to select more than one file and upload the selected files.

But two things are still not working:

1. The dropzone element only shows one file - not multiple
2. There is no button or element to add other files to the dropzone. It is only possible to remove the file ("x") and then add all files together.

Thanks for yout help :-)

[smnandre]

Would you like to work on a implementation ?

[rrr63]

Hi, I am facing the same problem here. If this issue is still open for a PR, I can work on it.

[simonsolutions]

I haven't managed to find time to look into it. So it would be appreciated of you could work on it :-)