DD-306 : Suppress no issue listings from audit listing dump, add no error message when no error, disable some right click menu items in multiselection cases

DD-286 : We report if a stock folder contains subfolders, we do not count subfolders in stock count and we move subfolders out on drop

ACME-1616: Change references of "Grid-Wide" to "Grid-Scope" and "non Grid-Wide"
 to "Land-Scope"

DD-211 : Verify that the items have the right permissions when dropping in a stock folder, add an adequate message when failing to drop in a stock folder.

DD-19 : Fix all the subcases signaled by QA and producers, though not with the same messages. Needs validation by producer.

ALCH-76 - Announce Incoming IMs and add some infra for more extensible message params, based on code by Ansariel Hiller/Firestorm

Made it possible to search for experiences with an empty search string, and show experiences with blank names as (untitled experience) for ACME-1585