About page RTL fixes.

Merges [30951] and [30952] to the 4.1 branch.

props helen, alex-ye.
fixes #30743, #30748.


git-svn-id: https://develop.svn.wordpress.org/branches/4.1@30957 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: Final RTL, editor-style, and search padding fixes.

Merges [30953], [30955], [30956] to the 4.1 branch.

Props iamtakashi, alex-ye.
fixes #30744, #30739, #30746.


git-svn-id: https://develop.svn.wordpress.org/branches/4.1@30958 602fd350-edb4-49c9-b593-d223f7449a82
Update individual term caches in `get_terms()`.

Merges [30954] to the 4.1 branch.

props boonebgorges.
fixes #30749. see #21760.


git-svn-id: https://develop.svn.wordpress.org/branches/4.1@30959 602fd350-edb4-49c9-b593-d223f7449a82