[Request] Support for hiding the JEI config button

[strubium]

It would be nice for mod devs to be able to hide the config button next to the search bar, as it's usually not needed.

[Rongmario]

Why would mod devs hide this? This is for the end user to configure?

[strubium]

My mistake, I meant mod pack devs. I must have typed that too quickly haha. In my modpack, I would like to hide this button since the one in the Mod Options menu works just fine, and the player doesn't need to change it.