In flask-appbuilder, the List View would use "List " + prettied model name as the title.

This makes sense for most of the cases, like `Variable`, `Connection`, etc.

But for `XCom`, the title is not making much sense.

(I'm testing with 2.0.0a2. But actually this issue exists in earlier 1.x versions as well).

![Airflow](https://user-images.githubusercontent.com/11539188/98450155-a087b480-213a-11eb-9472-008d282afaa1.png)



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tests/www/test_views.py
from parameterized import parameterized
from werkzeug.test import Client
from werkzeug.wrappers import BaseResponse
from airflow import models, settings, version
from airflow.config_templates.airflow_local_settings import DEFAULT_LOGGING_CONFIG
from airflow.configuration import conf
from airflow.executors.celery_executor import CeleryExecutor
from airflow.jobs.base_job import BaseJob
from airflow.models import DAG, Connection, DagRun, TaskInstance
from airflow.models.baseoperator import BaseOperator, BaseOperatorLink
from airflow.models.renderedtifields import RenderedTaskInstanceFields as RTIF
from airflow.models.serialized_dag import SerializedDagModel
from airflow.operators.bash import BashOperator
from airflow.operators.dummy_operator import DummyOperator
from airflow.plugins_manager import AirflowPlugin, EntryPointSource, PluginsDirectorySource
from airflow.security import permissions
from airflow.ti_deps.dependencies_states import QUEUEABLE_STATES, RUNNABLE_STATES
from airflow.utils import dates, timezone
from airflow.utils.log.logging_mixin import ExternalLoggingMixin
from airflow.utils.session import create_session
from airflow.utils.state import State
from airflow.utils.timezone import datetime
from airflow.utils.types import DagRunType
from airflow.www import app as application
from airflow.www.views import ConnectionModelView
from tests.test_utils import fab_utils
from tests.test_utils.asserts import assert_queries_count
from tests.test_utils.config import conf_vars
from tests.test_utils.db import clear_db_runs
class TemplateWithContext(NamedTuple):