SL-19982 Update font for menu items; show object's name in lsl editor

indra/llui/llkeywords.cpp

indra/llui/llmenugl.cpp

indra/llui/llmenugl.h

indra/newview/llpanelobjectinventory.cpp

indra/newview/llpreviewscript.cpp

indra/newview/llpreviewscript.h

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

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

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

indra/newview/skins/default/xui/en/widgets/menu.xml