Fix null attribute errors in Person
Fix null attribute errors in Person

We must invoke to_s on string attributes before calling member methods,
in case the attributes are nil.

dclegalhackers/districthousing,meiao/districthousing,adelevie/districthousing,uncompiled/districthousing,dclegalhackers/districthousing,meiao/districthousing,lankyfrenchman/dchousing-apps,adelevie/districthousing,uncompiled/districthousing,codefordc/districthousing,jrunningen/districthousing,dmjurg/districthousing,lankyfrenchman/dchousing-apps,dmjurg/districthousing,uncompiled/districthousing,codefordc/districthousing,codefordc/districthousing,dclegalhackers/districthousing,meiao/districthousing,codefordc/districthousing,dclegalhackers/districthousing,meiao/districthousing,dmjurg/districthousing,jrunningen/districthousing,dmjurg/districthousing,MetricMike/districthousing,MetricMike/districthousing,jrunningen/districthousing,MetricMike/districthousing,MetricMike/districthousing,uncompiled/districthousing,jrunningen/districthousing,jrunningen/districthousing,uncompiled/districthousing,meiao/districthousing,lankyfrenchman/dchousing-apps,codefordc/districthousing,adelevie/districthousing,adelevie/districthousing,lankyfrenchman/dchousing-apps