Update batch image export tutorial link

client tutorials in the main docs have been replaced by the 'help' guides for some time but this script was still pointing at a link which doesn't exist anymore.
Merge pull request #86 from sbesson/rebased/dev_5_0/patch-1

Update batch image export tutorial link (rebased onto dev_5_0)
Apply rendering settings from source image.
Usage ref to updateService.
Reformat code.
Merge pull request #87 from jburel/image-from-roi

Image from roi
Avoid division by 0.
Merge pull request #89 from bpindelski/divnull

Avoid division by 0 in Plot Profile.
Merge tag 'v.5.0.3'

Tag version 5.0.3