Move hardcoded messages to config.py
Use global notFound in news.py
Rename newsshow.html into newspage.html
Add formatTitle function
Optimize formatTitle
Let News index page display thumbnail pic.
Use png as default image format
Merge branch 'master' of http://git.oschina.net/luohao-brian/phonecms
Optimize newspage view.

1) dynamically produce next/prev page.
2) use fixed style against newspage view.
3) use name in news module instead of a global var.