Add option to copy SDTs from resource to group

Another use case today. We have SDTs at a top level group, but now need to move those SDTs down a level in the hierarchy (because SDT windows need to be varied due to change in the business).  Now I have to manually recreate them all on th elower level groups.  A "Copy SDT From" option would save us time.  Out enterprise operates around the globe with business continually reorganizing (M&A, etc), so we're dealing with different timezones, etc. all the time.  (We've achieved our end state with the monitoring side of things, so now it's these little Operations productivity enhancements that we're interested.)