Added Japanese language support

Please include this Japanese language support in the site.

Thank you!
Merge branch 'master' of https://github.com/pointbiz/bitaddress.org

Conflicts:
	bitaddress.org.html
	src/bitaddress-ui.html
	src/ninja.translator.js
Added Split wallet Japanese Translation

Updating translation
Merge pull request #83 from dabura667/master

Added Split wallet Japanese Translation