when login success not change channel

只解决了这个问题，
另外对channelwidget的代码做了些调整，将labels列表移到了slider内部管理，
add plugin base class
update for alipay
add missing files
alipay qrcode
alipay qrcode
fixed #22 on Github
Merge branch 'dev' of github.com:zllang/doubanfm-qt into zllang-dev
Merge branch 'zllang-dev' into 2.2-dev
add douban channel manager