MainActivity: Ensure spinner is hidden in fragments other than HomeTimeLineFragment. & Notification: Disable duplicate notifications.

Signed-off-by: Harry Chen <373685963@qq.com>
MainActivity: Ensure spinner is hidden in fragments other than HomeTimeLineFragment. & Notification: Disable duplicate notifications.

Signed-off-by: Harry Chen <373685963@qq.com>
Merge branch 'master' into eclipse