List tables: Get rid of double borders for plugins and themes on narrow screens.

see #32395.

Built from https://develop.svn.wordpress.org/trunk@33099


git-svn-id: http://core.svn.wordpress.org/trunk@33070 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Helen Hou-Sandí
2015-07-06 23:49:24 +00:00
parent 6fff730706
commit 2d6edf0fe8
5 changed files with 25 additions and 13 deletions

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