Add option to filter out specific datasets when parsing Histogram Data Files

[nothingface0]

Using a yaml configuration as @XavierAtCERN suggested, the user should be able to determine which datasets are to be dumped into the database when parsing Histogram Data Files

[nothingface0]

e.g.

list_of_monitoring_elements = ["chargeInner_PXLayer_1", 
                               "chargeInner_PXLayer_2", 
                               "chargeInner_PXLayer_3", 
                               "chargeInner_PXLayer_4", 
                               "size_PXLayer_1", 
                               "size_PXLayer_2", 
                               "size_PXLayer_3", 
                               "size_PXLayer_4"]