GEC-94 BDA-related fixes

Maik Nijhuisrequested to merge
gec-94-bdaddecal-fixes into master
  • Update epsilon value for BDA time comparisons.
  • Print number of solver iterations in BdaDdeCal.
  • Avoid printing spaces in DDECal when showTimings() of a sub step has no output.
  • Small code simplifications.
Edited by Maik Nijhuis

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