Changes for 0.6.11 release

[inodlite]

Includes changes for a "general release with some improvements":

• Update light settings for each shader to reflect values as they were in WZ at the time
• Add vanilla 3.3 shaders and corresponding UI controls
• Change animation logic to be run at same speed regardless of your hardware
• Allow enabling ECM effect
• Allow customizing light colors and persist custom color in settings
• Pre-create placeholders for all texture types in texture dialog (empty placeholders do not affect model)
• Address issue where PIE normals were mixed-up after loading a model where polygons had same text coordinates or indices