adds visualization for relativistic coefficients.  
not sure if this is completely proper, but resulting MOs strongly resemble non-rel mos for several tests
minor fix
fixes a bug in dimerize when projecting from a smaller basis to a larger basis
Revert "adds visualization for relativistic coefficients.  "

This reverts commit 57f7db86d2240f94f6bdc0dcf107329fb63e31d0.