Merge pull request #418 from BramChen/master

Add initial translation for Traditional Chinese (zh-Hant).
Merge pull request #419 from BramChen/master

remove extraneous files in editions/zh-Hant
Merge pull request #420 from BramChen/master

Add initial translation for Simplified Chinese (zh-Hans).
Add Simplified Chinese to tw5.com

We’ll have to stop adding every available translation to tiddlywiki.com.
Move starlight themes macros into the core
Make palette editor translateable
Remove the old placeholder translations for French and US English
Add palette editor translation for zh-Hant and zh-Hans
Merge remote-tracking branch 'upstream/master'