lots of typing fixes

app/portal/util.py

@@ -1,4 +1,5 @@
 from flask import Response, render_template, flash, redirect, url_for
+from flask.typing import ResponseReturnValue
 from flask_wtf import FlaskForm
 from wtforms import SubmitField
 
@@ -7,7 +8,7 @@ from app.models import AbstractResource
 from app.models.activity import Activity
 
 
-def response_404(message: str):
+def response_404(message: str) -> ResponseReturnValue:
     return Response(render_template("error.html.j2",
                                     header="404 Not Found",
                                     message=message))
@@ -20,7 +21,7 @@ def view_lifecycle(*,
                    success_view: str,
                    section: str,
                    resource: AbstractResource,
-                   action: str):
+                   action: str) -> ResponseReturnValue:
     form = LifecycleForm()
     if action == "destroy":
         form.submit.render_kw = {"class": "btn btn-danger"}
@@ -54,5 +55,5 @@ def view_lifecycle(*,
                            form=form)
 
 
-class LifecycleForm(FlaskForm):
+class LifecycleForm(FlaskForm):  # type: ignore
     submit = SubmitField('Confirm')