MainActivity: Fix duplicate menu icons and fragments

Signed-off-by: Peter Cai <xqsx43cxy@126.com>
TimeLineFragment: Cache when loading

This will optimize the speed of recreating

Signed-off-by: Peter Cai <xqsx43cxy@126.com>
NewPostActivity: Fix color filter

Signed-off-by: Peter Cai <xqsx43cxy@126.com>
Merge branch 'master' into eclipse

Signed-off-by: Peter Cai <xqsx43cxy@126.com>