SL-209 Cleanup Merchant Outbox

indra/newview/app_settings/commands.xml

indra/newview/app_settings/settings.xml

indra/newview/llinventorypanel.cpp

indra/newview/lltooldraganddrop.cpp

indra/newview/lltoolmgr.cpp

indra/newview/llviewerinventory.cpp

indra/newview/llviewermenu.cpp

indra/newview/skins/default/textures/textures.xml

.../newview/skins/default/xui/en/floater_merchant_outbox.xml

indra/newview/skins/default/xui/en/floater_preview_trash.xml

...a/newview/skins/default/xui/en/panel_outbox_inventory.xml

indra/newview/skins/default/xui/en/strings.xml