VA: US 501 Minor Point Errors

[Markkos1992]

Going from Buena Vista southbound:

1.  CraLn looks like it should be downgraded to an invisible shaping point.
2.  VA128_N should be VA128_E.
3.  SR635 should be SR655.
4.  VA633 should be SR633.
5.  VA636 should be SR636.
6.  VA626 should be SR626.
7.  MilChuRd should be relocated to nearby SR628.
8.  BlaWalChuRd should be shortened or changed to SR704.

[mapmikey]

changes made and in the queue