Listview: Added style for ordered list with formatted content. Fixes #1609.
Controlgroup: Clarified comment.
Navigate event: Create a custom event called "beforenavigate" so that, when someone binds to "beforenavigate", the "navigate" event will be initialized.
Popup: Make it work as a widget on its own. Fixes #5742.
Unit tests: Added test to make sure that when attaching to beforenavigate it is actually fired when the location is modified.