PullDown/Up fix: update to support 01fac8b

1. MoveDown Method in news/referer: noneed to encodeBlob for thumbnail
field of news, because the type of this field has already changed from
string to int

2. Change image src from relative path to absolute path for loading the
image from the correct url
Update icons for search and home
Merge branch 'master' of git.oschina.net:luohao-brian/phonecms

Conflicts:
	action/user/news/referer.py
News List fix: only display CURRENT_CATEGORY news
MoveUp and MoveDown support category
FrontEnd News PullDown/Up support category
Adjust dynamic added news item style
Add jQuery-Mobile-Icon-Pack(original) support
Replace default icons for back and right-arrow.

They can't be displayed on the embedded devices.