Refs #8347 Add new python fit function options for JumpFit
Refs #8347 Modifying Indirect JumpFit to support new functions.
Refs #8347 Update Bayes interface to support new functions.
Refs #8347 Correct variable name.
Refs #8347 Refactor functions to use Numpy functions where possible.
Refs #8347 Minor tweaks to IndirectJumpFit.
Merge branch 'feature/8347_upgrade_jumpfit' into develop