uploading zip file from MAC

• try to ignore .DS_Store files/folders
• add more informative feedback when upload of zip file crash

changed milestone to %v12.0.0

added BUG label

created branch 237-uploading-zip-file-from-mac

mentioned in merge request !190 (merged)

closed via merge request !190 (merged)

closed via commit a4874e60

mentioned in commit a4874e60