Using CSS class names to better identify redactor fields in admin panel

[stevecomrie]

It would be great if the <div> that wraps a Redactor (or any richtext field) included a class name that identified which configuration file was being used by each specific editor.

Currently the wrapper around a Reactor field looks like:

<div class="redactor enlarged">
or
<div class="redactor normal">

If I have 2 different reactor configs, "Option A" and "Option B", it would be great if the handle for those config options could be included in the class attributes, like:

<div class="redactor enlarged optionA">
or
<div class="redactor normal optionB">

This would make it easier to inject custom CSS into the Redactor fields (to provide a better editing experience for content authors) in cases where the style options vary between config options.