Return false from wp_get_referer() if it is called before wp_validate_redirect() is defined.

see #25294.

Built from https://develop.svn.wordpress.org/trunk@25399


git-svn-id: http://core.svn.wordpress.org/trunk@25330 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Return false from wp_get_original_referer() if it is called before wp_validate_redirect() is defined.

see #25294.

Built from https://develop.svn.wordpress.org/trunk@25400


git-svn-id: http://core.svn.wordpress.org/trunk@25331 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add file size to attachment publish meta box. props desrosj. fixes #25170.

Built from https://develop.svn.wordpress.org/trunk@25403


git-svn-id: http://core.svn.wordpress.org/trunk@25333 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix the failing `Tests_Link::test_wp_get_shortlink()` assertion:

* `wp_get_shortlink()` was firing a notice when reading `$post->ID` while `$post` was null in some cases
* Before the assertions that assume `$GLOBALS['post']` is not set, call `unset( $GLOBALS['post'] );` - there was global spillage from other tests

See #25282.



Built from https://develop.svn.wordpress.org/trunk@25404


git-svn-id: http://core.svn.wordpress.org/trunk@25334 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: fix comment for `twentyfourteen_excerpt_length()`, props SergeyBiryukov. Fixes #25297.
Built from https://develop.svn.wordpress.org/trunk@25406


git-svn-id: http://core.svn.wordpress.org/trunk@25335 1a063a9b-81f0-0310-95a4-ce76da25c4cd