FR: Copy (display) settings from existing user to existing user

[brothom 177]

When creating a user, we have the option to copy the settings from another existing user.

After the user has been created, we can't do that again. It would be nice to "reapply" the settings from (for example a template user) to other users so that their settings are copied again. On servers with multiple users this saves up having to manually compare each field when something changes, for example transcoding settings, bandwidth, etc.

This would also be useful to copy the settings from (amonth other things) the homescreen or display settings. They're a different section within Emby (I think) but it would be nice to also copy these settings from other users as (I personally) tend to shift the home sections around every now and then to make Emby feel a little more lively.

[Luke 42077]

HI, yes I've been meaning to add this. Thanks.