Video provider field shows up as placeholder when edited

[chazlarson]

Create a Video Provider. Save the provider, then click the edit button to bring up the dialog again.

Note that the PROVIDER URL text still shows the placeholder text.

The correct field value is coming back from the server; it's just not getting displayed.

{
    "ID": 4,
    "Name": "TV-Forum",
    "Provider": "Xtream",
    "Username": "chazlarson",
    "Password": "REDACTED",
    "BaseURL": "http://tvservice.pro:80",
    "M3UURL": "",
    "MaxStreams": 0,
    "UpdateFrequency": "@daily",
    "ImportedAt": "2019-01-22T00:27:22Z",
    "Tracks": [
        {
            "ID": 24423,
            "VideoSourceID": 4,
            "Name": "Chestnut: Hero of Central Park",