Forbidden file type prevents the upload of allowed file types

[Fraenkiman]

Hello, everyone,

When testing issue #152, the following was noticed:
If the uploader of a mixed file type selection contains a non-permitted file type, the subsequent permitted file types will also not be uploaded. There was also no "negative message" displayed; in the sense: "File(s) uploaded, but an error occurred."
I tested the following file type order: *.png, *.gif, *.jpg, *.php, *.zip, *rar, *.mp4 and *.avi
As a result, *.zip, *rar, *.mp4 and *.avi were not uploaded. The same behavior if a *.png, *.gif and *.jpg file type follows the non-permitted file.

So that the error list does not have to be expanded unnecessarily, I recommend displaying a negative message. This encourages the user to check the uploaded files.

The second option would be - with more work - to upload all permitted files despite the illegal file type.

Option three would be to include a newly defined error in the error list; as in: "File(s) uploaded, but an error occurred." This signals the user that although the upload of some files was successful, something went wrong.

Best Regards
Frank