[release-branch.go1.1] doc: pull front page featured articles using new blog JSON feed

««« CL 9288045 / 5785ebd7acfb
doc: pull front page featured articles using new blog JSON feed

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/9288045
»»»

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/9050046