Merge branch 'develop' into feature-mergesvcalls

...n/scala/nl/lumc/sasc/biopet/core/MultiSampleQScript.scala

...scala/nl/lumc/sasc/biopet/core/report/ReportBuilder.scala

public/biopet-core/src/test/resources/empty_summary.json

public/biopet-core/src/test/resources/template.ssp

...ala/nl/lumc/sasc/biopet/core/MultiSampleQScriptTest.scala

...asc/biopet/core/report/MultisampleReportBuilderTest.scala

...a/nl/lumc/sasc/biopet/core/report/ReportBuilderTest.scala

...a/nl/lumc/sasc/biopet/core/report/ReportSectionTest.scala

...cala/nl/lumc/sasc/biopet/extensions/tools/GvcfToBed.scala

...ls/src/main/scala/nl/lumc/sasc/biopet/tools/SeqStat.scala

.../test/scala/nl/lumc/sasc/biopet/tools/GvcfToBedTest.scala

...rc/test/scala/nl/lumc/sasc/biopet/tools/SeqStatTest.scala

...es/nl/lumc/sasc/biopet/pipelines/shiva/sampleVariants.ssp