Followups of !277

The following discussion from !277 (merged) should be addressed:

• @jobutter started a discussion: (+1 comment)

  (already an issue before MR maybe): merge is not given in the function...

• Make production/detection asymmetries floatable, see @miverone's discussion here and here

• Make CP fit parameter ranges configurable, see this comment

• Reduce naming-dependency, see this comment and this comment

• Make time error pdf binning and MistagPDF binning configurable

• revisit sign conventions of DecRateCoeff_Bd

• Allow to adjust merging and naming options if only signal component is generated, see @jobutter's comment here