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

see #27777.


git-svn-id: https://develop.svn.wordpress.org/trunk@28090 602fd350-edb4-49c9-b593-d223f7449a82
Add an explanation for 'Paste from Word' in the 'Paste from Text' dialog.

fixes #27777. see #27160.


git-svn-id: https://develop.svn.wordpress.org/trunk@28091 602fd350-edb4-49c9-b593-d223f7449a82