Twenty Fourteen: full-width page template should display a full-width featured image, except for mobile. Fixes #25925, props iamtakashi.

git-svn-id: https://develop.svn.wordpress.org/trunk@26098 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fourteen: don't load unused font weights. Props iamtakashi, fixes #25922.

git-svn-id: https://develop.svn.wordpress.org/trunk@26099 602fd350-edb4-49c9-b593-d223f7449a82