build_errors builds a dataframe of errors as used by the function
check_data.
build_errors(rows, pers_id, vals, column, description, importance)a dataframe of errors with the columns column,
description, importance
a vector of numbers representing the rows which contain an error
a vector of strings of the personal ID which contain an error
a vector of the erroneous values
the name of the column containing the error
the description of the error occurring
the importance of the error occurring