got rid of rotation handling in physics, as we don't need rotation yet
added direction locks to draggables, so that dragging down on a horizontal list view will ignore the drag event and let another draggable have a chance to handle it
logging fix
had strange drag behavior - if dragging a vertically draggable element horizontally, nothing would happen (expected), but when switching to vertical, the dragging would be very choppy as Hammer determines direction based on FIRST and last mouse events as opposed to the last two mouse events. Changed it to use the last two mouse events instead