Track Atlas update: TrackAtlas next

[JakobGartner]

I have worked on the next steps for TrackAtlas

• Positioning now for the full BGs list (previously only for LRBG and prvLRBG)
• As my test environment does not yet support the full BGs list, this functionality is only partially tested
• For that reason, the function TrackAtlas is unchanged, all changes are in a new function TrackAtlas_next
  @stefan-karg : can you please test this in a branch of the integration model? we don't want to disrupt the main release. If that looks good, i will merge the ...next model with the "old" one.
• the interface has slightly changed: one new input is needed (balisegroups from CalculateTrainPosition)

[BerndHekele]

Is this issue stil open?