Added generation of fixture safe styles to GenSafeStyles.scala generator.
Added generation of fixture safe styles to GenSafeStyles.scala generator.

cheeseng/scalatest,dotty-staging/scalatest,cheeseng/scalatest,scalatest/scalatest,dotty-staging/scalatest,scalatest/scalatest,scalatest/scalatest,cheeseng/scalatest,dotty-staging/scalatest