fix: add setup_enhance_admin_user() method for initial setup

so custom apps can add more roles/perms as needed

src/wuttaweb/views/common.py

@@ -245,6 +245,8 @@ class CommonView(View):
                 session.add(person)
                 user.person = person
 
+            self.setup_enhance_admin_user(user)
+
             # send user to /login
             self.request.session.flash("Account created! Please login below.")
             return self.redirect(self.request.route_url('login'))
@@ -254,6 +256,17 @@ class CommonView(View):
             'form': form,
         }
 
+    def setup_enhance_admin_user(self, user):
+        """
+        Further "enhance" the initial admin user when it is first created.
+
+        This does nothing by default; subclass can override if needed.
+
+        :param user: New admin
+           :class:`~wuttjamaican:wuttjamaican.db.model.auth.User`
+           which was just created as part of initial setup.
+        """
+
     @classmethod
     def defaults(cls, config):
         cls._defaults(config)