Add new fit-content rules to accompany intrinsic width on adminbar dropdown wrappers. Fixes #26430, props Jayjdk.

git-svn-id: https://develop.svn.wordpress.org/trunk@26735 602fd350-edb4-49c9-b593-d223f7449a82
Inline documentation fixes for hooks and functions introduced in 3.8.0.


git-svn-id: https://develop.svn.wordpress.org/trunk@26736 602fd350-edb4-49c9-b593-d223f7449a82