Bugfixes:

- fixed autoloader issue [#7726]
- several minor template (cs/js) bugfixes


Misc:

- code rewrite (following the forge guidelines)
Notice the changes to the AdvancedContent blocktype API!

- removed uninstall action
- removed bulk action to change contenttype of multiple pages
- changed contenttype name from Content2 to advanced_content
- removed action to switch the URL params (should not be needed anymore)
- compatibility fixes for CMSms 1.11, 1.10 and 1.9