Mark titles with an indicator of whether they are for the whole bill or just a portion

[aih]

This would eventually be shown in the related bills table in the UI. The data comes from data.json in the titles.is_for_portion: false or titles.is_for_portion: true field. We may need to capture this information along with the bill number when making the titlesIndex.json.

E.g.

"Requiring congressional approval prior to engaging in hostilities within the sovereign country of Iran.": ["116hjres58(w)"]
for portion=false (whole). and (p) for portion=true.