Fix multiple reconstruction steps via commandline

[koenhelwegen]

Due to a small typo the case of multiple reconstruction steps was not handled correctly

[SiemondeLange]

Hi,
The reconstruction steps are special input parameters and CATO expects them to be provided as:
structural_pipeline [STEPS]... -s SUBJECTDIR -m MCRROOT [OPTION]...
For example:
structural_pipeline structural_preprocessing fiber_reconstruction -s $SUBJECTDIR -m $MCRDIR

The fix introduced in this PR will break CATO, because the switch statement transforms its input to lowercase text (lower(varName)) and won't match with the changed case 'reconstructionSteps' that includes capitals.

[koenhelwegen]

ah, I see! Then I'm not sure why --general.reconstructionsteps="parcellation,collect_region_properties" works, but --general.reconstructionSteps="parcellation,collect_region_properties" does not?