rigidbody: Don't show dialog for "Connect" operator

Use redo last panel to change settings now.
This is more in line with how the rest of blender operates.

Also fix tootip

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54143 954f8c5b-7b00-dc11-b283-0030488c597c