Add channel name to create-user admin form

[kimsible]

Required fix : #2970

[Chocobozzz]

Is it still a WIP?

[kimsible]

Is it still a WIP?

Yes, didn't have time to commit my local changes with the fix.

[kimsible]

TODO: channelName must be added to createUser api doc as an optionnal parameter.

• On client side in the admin panel, channelName is required to avoid Main username channel displayName and unwanted unique channel name, this way we follow the signup form which forces the user to give a channel name ;
• Server side, channelName stays optionnal to not break the api.

[kimsible]

Tests have been fixed.

[Chocobozzz]

We don't want to autofill the channel name field depending on the user username like we do in the signup form?

[kimsible]

We don't want to autofill the channel name field depending on the user username like we do in the signup form?

You mean adding Display name fields ?

Otherwise, the goal is also to avoid the generic names "kimsible_channel" and "Main kimsible channel", I don't think automatic fill for something we don't want anymore is the right thing to do.

In any case the signup form asks username and channel name (with display names) on separate steps.

Display names may be edited by the user after account created.

EDIT: Also we can create a modal or an alert when signin if the user has still a display channel name like "Main kimsible channel" and no avatar set