HPCC-9347 Relocate Spray forms

Integrate Spray froms into LandingZone browse page.
Add upload/download functionality

Fixes HPCC-9347

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #4440 from GordonSmith/HPCC-9347

HPCC-9347 Relocate Spray forms

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>