Renamed the GlowModifier to "FlareModifier" and implemented it.  Renamed the LerpModifier to "WeighedLerpModifier" with an implementation.  For convenience of not needing a texture to modifier I also implemented a LerpGenerator that will Lerp two textures.  Implemented the JitterModifier.
Merge branch 'master' of github.com:BlackToppStudios/Mezzanine
Changed the colour setting methods that weren't called "SetColour" to "SetColour" to normalize the names between modifiers.
Changed a type to use a typedef that is ultimately the same type.  >.>
Implemented the EllipseModifier, and also adjusted the CircleModifier so it and the EllipseModifier use the same Relative/Adjustment idiom that the RectangleModifier uses.  Rearranged some methods in the RectangleModifier.