Move contactsmenu to vue

[rullzer]

The contactsmenu (behind the contact icon on every page on top) should be moved to Vue.

The vue programs from settings are probably a good place to start.

[mand0ng]

hi would like to help on this issue

[rullzer]

@mand0ng that would be great!

If needed @ChristophWurst @skjnldsv or @juliushaertl can probably get you started

[skjnldsv]

Yes :)
@mand0ng if you want, you can join our nextcloud vue dev channel so we can talk a bit about it 🚀

[skjnldsv]

dupe #15586