Lesson names and descriptions updated for all levels in Japanese. Also, initial translation of Clone introduction into Japanese complete
Merge pull request #219 from renderf0x/jaTranslations

Lesson names and descriptions updated for all levels in Japanese.
Fix typo
Merge pull request #220 from CalvertYang/patch-1

Fix Traditional Chinese translation typo
Update pushArgs2.js

Fixed typo
Merge pull request #222 from sschueller/patch-1

Update pushArgs2.js