Ability to choose if blocks are seen on mobile/tablet or desktop view.

[squinn]

From the admin side...

It would be helpful for design purposes. 

Sometimes I'd like to have something on the left hand column on desktop, but I don't want mobile or tablet users to have to scroll through it before getting to the main content.
There's such a disparity in display between a wide screen desktop set up and a mobile device.

As an aside, I think the title for the block (that shows in the front end) shouldn't be required by default, not every bit of html needs a title.

[Basara]

Thank you for suggestion