fix meshctrl addusertodevicegroup arguments

[ijustw0rkhere]

No description provided.

[si458]

this doesnt need fixing unless you can explain the change
the serverside code already converts usernames to userids

 // Convert user names to userid's
if (command.userids == null) {
  command.userids = [];
  for (var i in command.usernames) {
    if (parent.users['user/' + domain.id + '/' + command.usernames[i].toLowerCase()] != null) { command.userids.push('user/' + domain.id + '/' + command.usernames[i].toLowerCase()); }
    else if (parent.users['user/' + domain.id + '/' + command.usernames[i]] != null) { command.userids.push('user/' + domain.id + '/' + command.usernames[i]); }
  }
}

[ijustw0rkhere]

Ah, yep, you are correct....

This was supposed to be my first attempt at helping contribute so I figured I would start with something small. In classic fashion, I botched the attempt. This change was one of a few changes I have made in attempt to address some conformity issues in meshctrl. Unfortunately I grabbed one that was cosmetic rather than one that was impactful.

[si458]

@ijustw0rkhere sure, no worries, keep at it!