Add a "buddypress" class to body element of wp-admin

[johnjamesjacoby]

I think it'd be nice to add a buddypress class to the body element of the WordPress administration area when BuddyPress is active.

Certain WordPress core features do this already, like multisite, customize-support, locale, and color schemes.

Generally, this would help third party plugins stylize the admin area more specifically when BuddyPress is active.

Specifically, I have a need to add styling to body.profile-php but only when BuddyPress is active, and there's no way to do that currently without enqueueing a dedicated stylesheet file.

[slaFFik]

I don't see any harm, lets do it for all pages.

[hnla]

Can't cause issues can it, not at least from what I can see, I would add and be damned!

[slaffik]

In 11348:

Admin area: Add a buddypress class to body element of wp-admin.

This would help third party plugins stylize the admin area more specifically when BuddyPress is active.

See #7353.

[slaFFik]

Forgot to write "Fixes #7353" instead of "See #7353" :(