Merge pull request #120 from b3log/master

rebase
Merge pull request #123 from tjyang/master

locale for Traditional Chinese
i18n
Update README.md
#106

Basically completed the back-end implementation.
Merge pull request #124 from b3log/1.1.0

Merge pull request #120 from b3log/master
Update README.md
.
.
.
sign up
。
Fix #106

/signup
Fix #126
fix build & run stderr output
format html
Fix #127

@xbreezes
保存状态
保存文件时，未修改的不需要再次保存
fix 67