Should handle pages that does not hide on URL changes

[finnsson]

Using the config property urlToggle: 'show' it should be possible to develop pages that display of matching routes, but are not hidden on matching routes. Instead they need to be hidden programmatically.

<div data-bind="page: {id: 'X', urlToggle: 'show'}">
  This content is displayed if you browse to #!/X, but is not hidden when you browse to #!/Y
</div>