reenable posting and use helper more

suchwow/routes/post.py

@@ -56,10 +56,8 @@ def read(id):
 @login_required
 @profile_required
 def create():
-    flash("Posting is paused for a little while because people want to be rude and spammy.")
-    return redirect("/")
     if request.method == "POST":
-        submitter = session["auth"]["preferred_username"]
+        submitter = get_session_user()
         if submitter in config.BANNED_USERS:
             reason = config.BANNED_USERS[submitter]
             flash(f"You can't post for now: {reason}")
@@ -120,7 +118,7 @@ def approve(id):
 @login_required
 def delete(id):
     filtered = Post.filter(id=id)
-    user = session["auth"]["preferred_username"]
+    user = get_session_user()
     if filtered:
         post = filtered.first()
         if user == post.submitter: