About page: Don't allow tab text to wrap.

Some language, browser, and OS combinations (notably Arabic, Chrome, and Windows) were wrapping.

see #30743.


git-svn-id: https://develop.svn.wordpress.org/trunk@30951 602fd350-edb4-49c9-b593-d223f7449a82
Ensure inline code examples stay LTR, punctuation and all.

props alex-ye.
see #30748.


git-svn-id: https://develop.svn.wordpress.org/trunk@30952 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: fix styles for screen-reader-only search button in small screens.

Props iamtakashi, fixes #30744.

git-svn-id: https://develop.svn.wordpress.org/trunk@30953 602fd350-edb4-49c9-b593-d223f7449a82
Update individual term caches in `get_terms()`.

This was removed in [29915] as part of the attempt to add cache support to
`get_term_by()`. When that support was removed in [30900], it was not properly
restored.

This changeset includes a unit test to verify that the cache is properly primed
for terms found in `get_terms()`, as well as tests to verify the other cache
setting that was touched by [30900].

Fixes #30749. See #21760.

git-svn-id: https://develop.svn.wordpress.org/trunk@30954 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: ensure menu icon is properly centered for RTL views on small screens.

Props iamtakashi, fixes #30739.

git-svn-id: https://develop.svn.wordpress.org/trunk@30955 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: ensure RTL editor font style is consistent with front-end font style.

Props iamtakashi and alex-ye, see #30746.

git-svn-id: https://develop.svn.wordpress.org/trunk@30956 602fd350-edb4-49c9-b593-d223f7449a82