feat: [FRONT-2099] support arbitrary hex strings for granting pubsub permissions on Hub

[hpihkala]

• NewStreamPermissionsModal changes:
  • Allows the user to input any hex string instead of Ethereum address
  • However Grant, Edit, and Delete permission can only be given to Ethereum addresses
  • Some permissions must be checked for the submit button to be enabled
• Copy changes on stream page to replace 'account' terminology with 'keys' or 'Public Key' terminology depending on context.
• Fix overflow issue in case of long public keys (*screenshots below)
• Unrelated fix: CI was broken due to trying to start no-longer-existing nginx service

(*) Before:

After:

[linear]

FRONT-2099 Support arbitrary hex strings for granting pubsub permissions on Hub

[mondoreale]

The PR looks good.

I am, for some post-software-update related reason, unable to fire up the hub (node-datachannel + node-gyp). Working on it.

Will test in the browser as soon as possible!

[mondoreale]

Ok., tested. Works well!