Added ajax autocomplete for the directories dropdown in the policy view

tnc-ba/strongTNC#134
Added function to import swid tags from the workitems result field in the DB

Also, there is now a manage.py command to import swid tags from file
(tnc-ba/strongTNC#133)
Added trusted flag to device
Configured urls for swid app
Created regid template
Implemented SWID inventory view