HPCC-9204 Migrate to dgrid

dojox/grid is deprecated.

Fixes HPCC-9204

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
HPCC-9267 LZBrowseWidget

Added generic ESPRequest.Store

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>