Problem

In InstantTranslate it is possible to use the standard zip structure to upload a translation file. For single files within the "workfiles" directory it works, even though you cannot download a zip folder, but the target file only.
For more than one file, when they are directly in the workfiles directory, only the first one is translated/downloadable.
For files in a subfolder, nothing is downloadable, but an empty html with the subdfolder's name.

Solution

Support the use of the zip folder, translate all files/files in subfolders in "workfiles" and give back the same folder structure.