translated the article User Timing API into Japanese.
modified some in the conclusion
tone adjustment
corrected inconsistency
Updated Japanese language resource
Merge pull request #1097 from agektmr/shadowdom301_ja

Updated Japanese language resource
Automatically updating the calendar
merging
Merge pull request #1099 from agektmr/shadowdom_ja

Japanese translation on Shadow DOM 101
Automatically updating the calendar
Translated HTML Imports article into Japanese
Automatically updating the calendar
Automatically updating the calendar
some changes in the wording
Automatically updating the calendar
Merge pull request #1102 from agektmr/imports_ja

Translated HTML Imports article into Japanese
Merge pull request #1103 from ygoto3/userTimingApiTranslation

Translated the article "User Timing Api" into Japanese
Adds Data-binding Revolutions With Object.observe()
Merge pull request #1105 from html5rocks/observe

Adds Data-binding Revolutions With Object.observe()
<style> are now added to the main page by default