added support_id and filter for price>0 to scrooge supports api
Merge pull request #536 from mkurek/feature/scrooge-api-supports

added support_id and filter for price>0 to scrooge supports api
changed API (adapted for core visualization)
Merge pull request #542 from ar4s/dc-view-additional-info

Changed API (adapted for core visualization)
[edit/add asset] improved checks for device linked to another asset
fixed error silencing
added new default accessory
Merge pull request #546 from xliiv/feature/autenti-update

Fixed error silencing.
changed API for visualization blade chassis
Added constraint slot_no cant be set when asset is no blade + tests
Merge pull request #539 from xliiv/block-slotno

block slot_no if asset not blade
Merge pull request #545 from ar4s/fixtures-added-power-socket

Added new default accessory
Merge pull request #544 from ar4s/visualization-blade-chassis

Changed API for visualization blade chassis
Merge pull request #543 from xor-xor/unlinking_etc

[edit/add asset] improved checks for device linked to another asset