Log Message:
Changes 3.2.2:
Substantial "under-the-hood" improvements to the page tree resulting \ 
in significant reduction of page-tree reloads and generally cleaner code
Update jsTree version to 3.2.1 with slight adaptions to the Pagetree
Improve the display and useability of the language menu, especially in cases \ 
where there are many languages
Documentation improvements
Add support for django-reversion 1.10+ (required for Django 1.9).
Add placeholder name to the edit tooltip.
Add attr['is_page']=True to CMS Page navigation nodes.
Add Django and Python versions to debug bar info tooltip.