Update LossParser after update

in src!494 (merged) (for OPAL 2.6) the ASCII loss output was updated from:

# Element: NAME , x (m),  y (m),  z (m),  px ( ),  py ( ),  pz ( ), id

to

# x (m),  y (m),  z (m),  px ( ),  py ( ),  pz ( ), id;

The LossParser should be adapted such that it reads in the new and the old format.