修改选择状态下切换页面的downloadItem
修改按月份显示
Merge remote-tracking branch 'origin/master' into chenyan

Conflicts:
	src/com/chainton/pdmclient/system/service/SystemMediaService.java
修改
Merge branch 'chenyan'

Conflicts:
	src/com/chainton/pdmclient/system/service/SystemMediaService.java
修改音乐 视频
Merge branch 'chenyan'
修改
Merge remote-tracking branch 'origin/master' into chenyan
分辨率
修改
Merge branch 'master' into chende