Fixed Redundant UTF-8 Sequence error
When Tree or Network page is opened and commit log's encoding is non-UTF-8, may be occur "Redundant UTF-8 Sequence" error. This patch fixes the error.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
When Tree or Network page is opened and commit log's encoding is non-UTF-8, may be occur "Redundant UTF-8 Sequence" error. This patch fixes the error.