Provide summary of how many files analyzed, have issues and ignored (due to .bidsignore)

[yarikoptic]

trafficstars

Could be as simple as expanding the total number of files in Summary

instead of

        Summary:                     Available Tasks:                      Available Modalities: 
        14966 Files, 750.13GB        movie                                 MRI                   
        88 - Subjects                rest                                                        
        2 - Sessions                 rsa                                           

get smth like (might need tuning to fit into table like form)

        Summary:                     Available Tasks:                      Available Modalities: 
        14966 - Files (100 with errors, 866 ignored)        movie                                 MRI                   
        750.13GB - Size              rest                                                        
        88 - Subjects                 rsa