Fix issues when saving the brush into resource folder
The patch fixes leftovers of bug 443875 of Krita behavior when the resource is saved directly into the resource folder:
- The "modified" flag is now reset (and well as modification date)
- The name of the image is updated to the real versioned resource filename
- The bursh name (the one saved inside the resource) is now kept the same and doesn't include the version suffix. It is done by passing the resource name into the saver using exportConfiguration object.
Edited by Halla Rempt