Merge from viewer-experience-merge

indra/newview/app_settings/settings_per_account.xml

indra/newview/llinventoryfilter.cpp

indra/newview/llinventorypanel.cpp

indra/newview/llinventorypanel.h

indra/newview/llpanelmarketplaceinbox.cpp

indra/newview/llpanelmarketplaceinboxinventory.cpp

indra/newview/llpanelmarketplaceoutbox.cpp

indra/newview/llsidepanelinventory.cpp

indra/newview/llsidetray.cpp

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

.../newview/skins/default/xui/en/widgets/inventory_panel.xml