More Chinese Translation

Modify Chinese translation in properties file, and add new translation that synchronizes with commit synchronize with commit **e4e6829**

Add other translation files

In fact, I first translate **Gitblit** in [http://www.getlocalization.com/gitblit/](http://www.getlocalization.com/gitblit/). and mentioned +Gitblit in G+ with no reply.
![01](https://f.cloud.github.com/assets/1393880/89317/259cc4a4-6536-11e2-9b85-6d10185f2316.png)

OK, finally I found this place. Maybe that [page](http://www.getlocalization.com/gitblit/) is not official page? I guess.

I translated most of strings, and modified some of strings of @dapengme. Of course the translations are not perfect and any translation modification is welcome.

*.mkd and *.html files are utf-8 encodings with no BOMs