Fix crash when a magic projectile has no sound defined (Fixes #1967)
Use the footstep volume slider for jump landing sounds (Fixes #1968)
Optimize physics shape scaling on cell load
Simplify getEffectMultiplier.

Both return cases were same, except for some overflow conditions.
Fix magic projectile sound disappearing after multiple save/load cycles
Teleport indirect followers as well when using a door (Fixes #1974)
Fix divisions by zero in normalizedEncumbrance
Fix not being able to move with 0/0 encumbrance (Fixes #1979)
Don't allow raising faction rank if the next rank has no name (Fixes #1975)
Fix projectiles colliding with dead actors (Fixes #1971)
Fix recharging items not being updated for actor's initial inventory
More efficient water walking
Fix footstep sounds played during water-walking
Fix being able to rest while water-walking (Fixes #1712)
Fix broken onGround status when levitating
Implement fDispositionMod according to research wiki
Fix typo in comments.
Cleanup:  Don't call <environment obj>.get().

mEnvironment.get() is redundant.  Switch the call to resemble the
surrounding environment get() calls, instead.
Merge remote-tracking branch 'scrawl/master'
Fix HasSoulgem function to return number of soulgems