Vue warnings should cause unit tests to fail

[nwmac]

Currently, vue warns logged during tests do not cause the tests to fail - they should - we have ended up with a lot of noise in the unit test run as a result.

[cnotv]

As I've been dealing with pretty much everything related to the CI from the very beginning, I don't want to take from peers the possibility to learn such things. Therefore I remove myself from the assignee.

I do not think we have a specific reason to assign all of them to me.

[gaktive]

Should do this early in a release cycle.