Edit media content analysis and focus kw metabox

[afercia]

I'm not the best person to know how the content analysis should work for attachments, by the way seems it is not working on trunk? No JS errors. See below. Worth nothing also on 3.2.5 I get "The text contains 0 words." But I'm not sure what the "text" is supposed to be in an attachment, the caption? the description?

[Rarst]

If I remember right text analysis was altogether removed from attachments while back. Not sure what's the current intended status is.

[tacoverdo]

Bug confirmed on WP 4.5.2 with Yoast SEO 3.3-beta5.
Milestoned for 3.3.

@Rarst 3.2.5 has the meta box for attachments, so I suppose it should be there and work.

[Pcosta88]

Please inform the customer of conversation # 123361 when this conversation has been closed.
User reports that media description is not filling-in the meta description box. User must make custom meta descriptions as a workaround.

Media Description

Meta Description

User also reports that media description area is not being scanned by content/'inhalt' area in Yoast SEO module