Add `media_submitbox_misc_sections` and `audio_submitbox_misc_sections` filters to allow removing or adding of attachment submitbox sections containing attachment metadata. props desroj, DrewAPicture. fixes #25171.


git-svn-id: https://develop.svn.wordpress.org/trunk@25296 602fd350-edb4-49c9-b593-d223f7449a82
Add dynamic classes for attachment metadata submitbox sections. see #22333, #25171.


git-svn-id: https://develop.svn.wordpress.org/trunk@25297 602fd350-edb4-49c9-b593-d223f7449a82