Made the manager pointer type more explicit.
More minor and silly styling changes.
Minor documentation fix.
Moved the listing for an enum so it was alphabetical order.
Refactored the way scaling is accounted for in the Physics proxy, to hopefully best counter the inconsistent design bullet has compared to other subsystems.  Also completed the serialization methods on the physics proxy.
Minor API fix.
Merge branch 'master' of https://github.com/BlackToppStudios/Mezzanine
Documentation fix.
Added an XML constructor.
Corrected a spelling error regarding Anisotropic Friction.
A number of compile fixes for the physics proxy base class.
Minor Prep work for the rigid physics proxy.