Permanently dismiss the "service added" message in the inspector.

[frankban]

As suggested by Luca, the message is dismissed per-model, meaning
it's not shown again for the single service inspector.

[frankban]

QA:
Devel:

• make devel;
• visit the GUI;
• deploy a service (drag and drop);
• dismiss the "Your service has been added" message in the inspector;
• switch to the machine view: the message does not appear again;
• switch back to service view and deploy another service;
• the message is there;
• click to the previously added ghost: the message is not shown;
• click back to the second service and dismiss the message;
• now you can switch between the two services, or between
  service and machine views, and the message is never shown;
• auto-place the units and commit: everything should work as usual.

Real env:

• juju quickstart an environment;
• juju set juju-gui juju-gui-source="https://github.com/frankban/juju-gui.git dismiss-service-added";
• wait for the GUI to be ready then visit the GUI;
• QA as described above in Devel.

Thank you.

[jujugui]

Test FAILed.
Refer to this link for build results: http://ci.jujugui.org:8080/job/juju-gui/2112/

[kadams54]

QA is OK, code is 👍 and test failure is likely spurious.

[mitechie]

👍 and yes the test failure is spurious.

[mitechie]

npm issue, try again

[jujugui]

Status: merge request accepted. Url: http://ci.jujugui.org:8080/job/juju-gui-merge