Add title for regions
Use preview-config with cover=false to let small images stay small
Add cutoff for filename if to long
Styling input custom width/height
Add constraint to prevent user from resize out of image

Tried to remove check if pos < 0 or pos + size of cropregion > size of image
but it is still possible to resize about 3px out of the window and
I didn't found how to solve this bug by now so the old check is still needed
Handle situation when image to small.

If image to small window keeps min-size. If image bigger than min-size
window becomes bigger.
Set correct title to match button
Center crop image if smaller than window