Force descriptions to be str objects

Fixes #159

testproj/people/models.py

@@ -1,9 +1,10 @@
 from django.db import models
+from django.utils.safestring import mark_safe
 
 
 class Identity(models.Model):
     firstName = models.CharField(max_length=30, null=True)
-    lastName = models.CharField(max_length=30, null=True)
+    lastName = models.CharField(max_length=30, null=True, help_text=mark_safe("<strong>Here's some HTML!</strong>"))
 
 
 class Person(models.Model):