merging
merged
tweaked Japanese translation on Shadow DOM 101
Adding Japanese title for User Timing API article
Merge pull request #1117 from agektmr/shadowdom_ja

Tweaks in Japanese translations.
Another little typo correction
Fixes media queries for O.o heading, strap
IT translation: Supercharging your Gruntfile, plus typo fixes for the original article
Merge pull request #1120 from b3by/master

IT translation: Supercharging your Gruntfile, plus typo fix