WIP: Android 帐号框架实现 KBS 登陆身份
优化列表项过度绘制 (overdraw) 问题
Merge branch 'master' into feature/accounts
集中 KBS 账户逻辑到单独的包
顺手去除一些重复代码, 清理下遇到的类型
Merge branch 'feature/accounts' into feature/slidingmenu

Conflicts:
	src/main/java/org/jnrain/mobile/updater/UpdateManager.java
	src/main/java/org/jnrain/mobile/util/JNRainActivity.java
	src/main/java/org/jnrain/mobile/util/JNRainFragmentActivity.java