liq| callback|: 11. RMB pop menu of liquidShader
liq|: remove .lg file - 1. add "setAttr liquidGlobals.* " to rm and er
liq|: remove .lg file - 2. obsolete lg file
liq| callback|: 12. RMB pop menu of erTestLight and rmOccLight
liq| callback|: 13.RMB pop menu for er_skylight
liq| callback|: 13. bufix: er AE category
liq| shadergraph|: bugfix: er_physicalsky --> er_skylight