* Protect ITIL document deletion against CSRF

* Protect AJAX POST queries against CSRF

* Keep CSRF token when used from AJAX query

* Ensure marketplace writing actions are using POST

* Ensure planning writing actions are using POST

* Ensure datacenter writing actions are using POST

* Ensure timeline writing actions are using POST

* Ensure objectlock writing actions are using POST

* Ensure dashboard writing actions are using POST

* Ensure file uploads are using POST

* Ensure kanban writing actions are using POST

* Ensure cache reset operations are using POST