Fix argument checking and allow multiple measures

[picciama]

PR Checklist

• This comment contains a description of changes (with reason)
• Referenced issue is linked
• If you've fixed a bug or added code that should be tested, add tests!
• Documentation in docs is updated

Description of changes

• allowed more measure
• made column name handling consistent between custom and available datasets
• made docs a bit more clear for usage with custom datasets

Technical details

• ensured proper checks for allowed measures depending on custom or available datasets in the precence of curve_curator or not in checp_params
• ensure presence of provided custom dataset in the right place with the right name, given dataset_name, path_data, and curve_curator

Additional context

[JudithBernett]

looks good