Changes Devices on Contract view to count and link

[joewesch]

Closes: #439

What's Changed

Before

Currently, the detailed view showed a list of all devices associated to it. This can cause issues at scale as it has to load all of those devices before the page can load.

After

With this change, the device list has changed to a count and the count is a hyperlink to the Device list with a filter pre-applied.

To Do

• Explanation of Change(s)
• Added change log fragment(s) (for more information see the documentation)
• Attached Screenshots, Payload Example
• Unit, Integration Tests
• Documentation Updates (when adding/changing features)
• Outline Remaining Work, Constraints from Design

[progala]

LGTM