fr-FR translation for TableOfContents caption
Missing Sidebar fr-FR caption, plus better translation for Contents
german translations
Merge pull request #666 from pmario/de-DE

german translations
Merge pull request #665 from xcazin/fr-FR

fr-FR missing captions for Sidebar
Merge pull request #664 from BramChen/master

Add chinese translations of the TOC tab caption
A new colour palette
Improve handling of popup state

An improvement to 6fb992690d33940d3509d7d4d74538e7f458e063

By making sure that all the popup state tiddlers have the prefix
$:/state/popup/ we can be more selective and just exclude popup state
tiddlers when we save. The end result is that once again other kinds of
state are persisted as expected (eg tabs, and sidebar visibility).
Docs updates
Fix problem with overwriting existing tiddlers
Docs update
Fixed problem with pasted items lacking a type
Add isEqual() method to tiddlers
Fix detection of draft changes

We were getting a lot of problems where changes to a tiddler were not
being recognised