* rules/bio/genetics/association/plink.rules: remove add_section
* rules/bio/ngs/qc/picard.rules: remove add_section
* rules/bio/ngs/qc/sequenceprocessing.rules: remove add_section
* workflows/bio/variation.workflow: update search path to picard
Merge branch 'hotfix/delete-add-section'
Merge tag 'delete-add-section' into develop

Remove trailing add_section statements
Merge branch 'develop' into feature/methylseq