Add django-guardian for object-level permissions

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

board/models.py

@@ -331,3 +331,10 @@ class BanTemplate(models.Model):
             return f"/{self.board.url}/ - {self.name}"
         else:
             return self.name
+
+
+class Capcode(models.Model):
+    # Content to display *before* the capcoded user's name.
+    prefix = models.CharField(max_length=100)
+    # Content to display *after* the capcoded user's name.
+    suffix = models.CharField(max_length=100)