feat(people): Allow people to describe relationships

Creating a relationship requires answering each of the
relationship questions

resolve #2
partial #5

people/migrations/0007_relationship_question_answers.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2.10 on 2020-02-20 13:47
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('people', '0006_relationship_questions_order'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='relationship',
+            name='question_answers',
+            field=models.ManyToManyField(to='people.RelationshipQuestionChoice'),
+        ),
+    ]