Switch from VueJS 2 to alpine.js?

[Svedrin]

We're still using VueJS 2, which is deprecated. I don't want to use VueJS 3 though, because I feel it's way too large and complicated for what we need here. Instead I'm thinking about switching to alpine.js, which is more in the spirit of what we need here.

Currently this is an enhancement because everything works using VueJS 2, and as long as nothing's broken, it's not a bug.