Changes to the preview button behaviour:
Changes to the preview button behaviour:

* Don't display the 'confirm leaving' dialog
* Don't remove the page lock

https://bugs.corefiling.com/show_bug.cgi?id=44254

ashirley/reviki,ashirley/reviki,ashirley/reviki,ashirley/reviki,CoreFiling/reviki,strr/reviki,CoreFiling/reviki,strr/reviki,CoreFiling/reviki,CoreFiling/reviki,ashirley/reviki,strr/reviki,strr/reviki,CoreFiling/reviki,strr/reviki