function clear(force) {
			// Restore selection possibilities
			editor.getBody().style.webkitUserSelect = '';

			if (force || hasCellSelection) {
				editor.$('td[data-mce-selected],th[data-mce-selected]').removeAttr('data-mce-selected');
				hasCellSelection = false;
			}
		}
This class handles table cell selection by faking it using a css class that gets applied
to cells when dragging the mouse from one cell to another.

@class tinymce.tableplugin.CellSelection
@private