TEXMAP support added to the Parts Tracker

[Johann Eisner]

The Parts Tracker now supports the uploading of image files for the Texture Mapping Language Extension (TEXMAP).
It should all be working, including the detection of dependencies and rendering of the preview images, but if you find any problems, please post here.
There is still some work to do to support this in the Parts Update process, so TEXMAP parts may need to be excluded from the next parts update.
The revised version of the submit page now allows multiple files of the same type and destination folder to be uploaded in one batch.

Maybe I'm thinking wrong, but will not there be "normal" patternd parts in the future?
Older semesters like mine still rely on MLCad, but this does not support these parts.