Code review comment for lp://qastaging/~aacid/unity-2d/unity-2d_pointer_barrier

Checking with Unity, I noticed 3 differences:
1. barrier extends along whole edge of screen, including panel
2. pushing the bit of the barrier that meets the panel does *not* reveal launcher
3. as you push launcher barrier, a small shadow appears which indicates you should push harder to get launcher to open.