casts, consts, and decl order
Merge pull request #69 from asmaloney/more_cleanup

casts, consts, and decl order
CC can now convert textures/materials to RGB
+ PLY export filter now handles textures/materials
New way of handling color scales + advanced color scale editing dialog (in progress)
'NaN displayed in grey' is now set per scalar field.
Color Scale Editor and properties view enhanced (almost finished)
New way of handling color scales + advanced color scale editing dialog (in progress)
New way of handling color scales + advanced color scale editing dialog (in progress)
Typo
Custom color scales are now automatically saved in persistent settings
Missing include for compilation on Linux