data quality checking and visualization

1. quality checking OD demand direction of links general purpose links vs. tolled link

field VDF_allowed_usesk, k as demand period. consider different agent types. e.g. sov, toll

toll facility should have different agent types, to input allowed uses, users can use nexta->path selection. path selection

flow balance checking for density select link analysis using agent dialog.

need to know how to fix the issue, model the use of toll lanes and general purpose lanes correctly