Provisioning test SMTP check

* Added Notifier role
* Added check for 2 e-mails present:
    * e-mail informing about provisioning request approval
    * e-mail informing about provisioning request finish
Advanced Search testing in VMs
temp workaround for allowing upstream db connections
Merge pull request #744 from mfalesni/adv_search_vms

Advanced Search testing in VMs
Merge pull request #750 from dajohnso/loosen_pgssl

temp workaround for allowing upstream db connections
Merge pull request #710 from mfalesni/provisioning-email-check

Provisioning test SMTP check
Added possibility to assign Policy Profiles to VMs through UI.

* Two functions to manipulate the PPs
* Fix of wrong tree call (needed lambda)
Tree update

* Tree class updated to be able to select checkboxes on new-type trees
* The Virtual Machines now reflect this change
Virtual Machines now uses the possibilities of Tree
Finished the remaining stuff
Made a little cleanup