* revert part of 7d067bac, should fix #2193
* Ticket description was readonly with rich text enabled but not if disabled
* attempt to clean the mess in ticket update right
* redo par with assign/steal/own
* work on clean rights in tickets
* tickets rights now ok
* fix document adding in timeline
* Add unit tests
Basic ACLs tests
Test postonly ACLs
Add tests for tech
Test canRequesterUpdateItem
Add missing can* tests
Test output for Ticket::showForm()
* Few fixes and improvements on tests
* Fix canMassiveAction() and canAddItem() calls
* Test ACLs when not owner/requester
* Test priority and assignment
* more simpler canAddItem usage
* fix tests cases for self-services canUpdateItem
* missing test change