This change updates the ListView's and ItemContainer's selection model and selection visuals. Here's brief list of everything that changed:

- Swipe/cross-slide is no longer part of our selection model. Support for this has been removed in this change. The following are now deprecated/removed:
 * WinJS.UI.ListView.swipeBehavior
 * WinJS.UI.ItemContainer.swipeBehavior
 * WinJS.UI.ItemContainer.swipeOrientation
 * WinJS.UI.SwipeBehavior
 * Right-click to select an item
 * Shift+F10 to select an item
 * CSS class "win-listview-supports-cross-slide"
 * CSS class "win-swipeable"
 * CSS class "win-swipe"
 * CSS class "win-selectionhint"

- The ListView's selection model has been updated in a couple ways:
 * When selectionMode=multi is combined with tapBehavior=toggleSelect, the ListView will consider itself to be in "selection mode". In this mode the ListView will draw an empty checkbox over every ListView item to indicate to the user that an item is selectable
 * When a ListView is using a vertical ListLayout and is in selection mode, it will render checkboxes on the left side of the item instead of the top right corner. In order to accomodate that, the ListView shifts items' contents over to the right to make room for these checkboxes, and shifts them back left when selection mode has been exited