CRJ700-Family: Removed alpha channel from blank liveries to avoid rembrandt problem.
Changed parenting of 3D objects according to http://wiki.flightgear.org/Livery_over_MP#Performance_Improvements
From: Henning Stahlke <github@...>
Authored by: hamzaalloush 2016-09-19
Parent: [r2198]
Child: [r2200]