SL-17586 WIP -- LLMaterialEditor prototype and "New Material" inventory buttons.

indra/newview/CMakeLists.txt

indra/newview/llinventorybridge.cpp

indra/newview/llmaterialeditor.cpp

indra/newview/llmaterialeditor.h

indra/newview/llviewerfloaterreg.cpp

indra/newview/llviewerinventory.cpp

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

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

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

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

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