Fix SlideShare oEmbed regex.

props kovshenin.
fixes #28380.
Built from https://develop.svn.wordpress.org/trunk@28597


git-svn-id: http://core.svn.wordpress.org/trunk@28422 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: Avoid passing an empty string to document.getElementById().

props nabil_kadimi.
fixes #28340.
Built from https://develop.svn.wordpress.org/trunk@28598


git-svn-id: http://core.svn.wordpress.org/trunk@28423 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Display Dashboard icon instead of the home icon in toolbar when the link leads to Dashboard.

props ghost1227.
fixes #26754.
Built from https://develop.svn.wordpress.org/trunk@28599


git-svn-id: http://core.svn.wordpress.org/trunk@28424 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix displaying taxonomies in bulk edit if the post type does not support titles.

props scribu.
fixes #16793.
Built from https://develop.svn.wordpress.org/trunk@28600


git-svn-id: http://core.svn.wordpress.org/trunk@28425 1a063a9b-81f0-0310-95a4-ce76da25c4cd