Let dragging work in IE10 via touch interface.

[georgestephanis]

In testing on the Microsoft Surface RT tablet, draggable things were completely undraggable through the touch interface -- whether they were dashboard boxes, widgets, or menu items.

As per ​http://msdn.microsoft.com/en-us/library/windows/apps/hh767313.aspx and ​https://msmvps.com/blogs/theproblemsolver/archive/2012/10/24/jquery-ui-and-windows-8-and-internet-explorer-10-touch-screens.aspx this can be solved quite simply by adding the -ms-touch-action: none; property to the CSS of the elements in question.

If someone would prefer to do it via Javascript, it can be done via

if (typeof el.style.msTouchAction != 'undefined') el.style.msTouchAction = "none";

but I'm happy just doing it via CSS for the moment unless Koop would prefer it be in the js.

[koopersmith]

As per a discussion ​in IRC, we're going to go with a broad, CSS-based fix that targets jQuery UI until a fix is rolled into jQuery UI core.

[georgestephanis]

22583.2.diff as per koop

[koopersmith]

I have no means of testing this, but this looks solid. We'll also need to drop this snippet at the beginning of media-views.css.

[koopersmith]

Added. Based on our IRC conversation earlier and georgestephanis testing as he developed the patch, this is ready. Let's rock.

[ryan]

In 22866:

Fix dragging in IE10 on touch devices.

Props georgestephanis, koopersmith
fixes #22583