Issues with daemon status presentation

I observed several issues with presenting the status of the Kea daemons after shutting down the agent and/or Kea daemons. The steps to reproduce the first issue:

• Start Stork Agent and Kea DHCPv4 and Agent on the machine
• Add the machine to Stork
• Make sure you can see the Kea app and you get green ticks on DHCPv4 and CA daemons and red cross on DHCPv6
• Shut down the agent. After a while you should observe communication errors and red crosses on DHCPv4 and CA
• Restart the agent and wait a while. The red crosses are still there for DHCPv4 and CA.

The situation doesn't even seem to improve when refreshing the page nor after refreshing machine/app.

Another interesting case is this:

• I had everything running and I now shut down Kea CA
• I was expecting that the communication error will show up after a while in the daemon tab, but it didn't. Nevertheless...
• I clicked on the dashboard and saw red crosses next to the Kea daemons (as expected)
• I restarted Kea CA
• I started navigating between the dashboard and the Kea app view. I still see error boxes and red crosses even though the CA is working fine
• Refreshing the page doesn't work. Still see errors.