uploading files is inconsistent when using `path`

[davibe]

Considering I want to upload App.apk and file.zip

If I use path: "test"
=> the apk will be uploaded as testApp.apk while the files will be stored in test/file.zip

If I use path: "test/"
=> the apk will be uploaded as test/App.apk while the files will NOT be uploaded

This is because the path is handled inconsistently for uploading files and apk