- gitattributes: make sure all sources have LF-only line-ending in order to prevent cross-platform development and git commit troubles

- gitignore: ignore editor backup files

- exedit: include copyright notice at the top
- copied the changelog and pulled the copy through google translate

- updated the included jquery file to 1.10.0
- first bit of cleanup of the google-translated Changelog

- removed the ztree.exedit.js file as it is identical to the ztree.exedit-3.5.js file.

- updated the demo files to point at the new jquery file in js/
replaced a lingering piece of Chinese text in the English demos.