Bug 1832805: Add missing lang strings when saving page to timeline

Four new lang strings:
* cantversionviewinvalid
* cantversionvieweditpermissions
* cantversionviewsubmitted
* cantversionviewgroupeditwindow

Have separated the scenarios out for better feedback to the user.

Sponsored by The Australian National University

behatnotneeded

Change-Id: Id4952c37f35631b2f6a1dfad8129bac48108d733