Add a feature pointer for widgets in the customizer in 3.9. Remove older pointers from 3.3 and 3.4.

see #27777.

Built from https://develop.svn.wordpress.org/trunk@28090


git-svn-id: http://core.svn.wordpress.org/trunk@27921 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add an explanation for 'Paste from Word' in the 'Paste from Text' dialog.

fixes #27777. see #27160.

Built from https://develop.svn.wordpress.org/trunk@28091


git-svn-id: http://core.svn.wordpress.org/trunk@27922 1a063a9b-81f0-0310-95a4-ce76da25c4cd