提供Ctrl+M的支持

Signed-off-by: ghuazh <ghuazh@gmail.com>
在下拉选框的导航选择器方式下，使用较小的字体

Signed-off-by: ghuazh <ghuazh@gmail.com>
改善刷新的性能

Signed-off-by: ghuazh <ghuazh@gmail.com>


Signed-off-by: ghuazh <ghuazh@gmail.com>
Merge branch 'master' of https://github.com/sgewuhan/vision.git


Signed-off-by: ghuazh <ghuazh@gmail.com>