Set remember=True on login_user to persist login sessions

Before this, after closing the browser a user had to login again.

pillar/auth/__init__.py

@@ -208,7 +208,7 @@ def login_user(oauth_token: str, *, load_from_db=False):
         user = _load_user(oauth_token)
     else:
         user = UserClass(oauth_token)
-    flask_login.login_user(user)
+    flask_login.login_user(user, remember=True)
     g.current_user = user