Fix team name validation in UI

[stuebingerb]

Although it should be valid to have an unescaped -, at least Google Chrome and Firefox complain about an "Invalid character in character class" and completely skip validation, leading to confusion as to why team creation fails.

Also fixed the validation message to state the minimum number of characters and applied red text color on invalid input.

[stuebingerb]

Also note that npm install complains about several vulnerabilities but since those include breaking changes and I am not feeling comfortable enough to verify everything is still working I decided to skip them. You might want to have a look yourself maybe.

[J12934]

@stuebingerb you probably mean the vulns from the balancer backend package.json?
These are unfortunately not fixable right now as they can only be fixed once the kubernetes client node is done migrating away from the deprecated request node library: https://github.com/kubernetes-client/javascript/blob/master/FETCH_MIGRATION.md
Keeping an eye on that one but might still take a while. The vulnerabilities that request has so far probably also don't really apply for MultiJuicer but would still be very nice to get rid of them... 😔

[J12934]

ahh nice, thank you yeah i guess that was slightly wrong.

will probably tweak the coloring a bit :)

[stuebingerb]

will probably tweak the coloring a bit :)

Feel free, mine was mostly a proof-of-concept 😉