code cleanup: simplify python rigidbody operators.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56178 954f8c5b-7b00-dc11-b283-0030488c597c
code cleanup: minor improvements to scripts.
- make wm-property operators use INTERNAL option.
- make console use str.expandtabs() rather then replacing tab->spaces.



git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56179 954f8c5b-7b00-dc11-b283-0030488c597c