translate: Add single retry when the download failed the first time due to a preview unavailable
translate: Add single retry when the download failed the first time due to a preview unavailable

When the Elvis Server uses an NFS server for storage, the caching of the NFS server might result in this problem. Real solution is to turn caching off, this fix is kind of a last resort when it is enabled.

WoodWing/elvis-image-recognition,WoodWing/elvis-image-recognition,WoodWing/elvis-image-recognition