Add vertical panning to CameraMan
Level 1 1/4th complete - Other fixes

- Improve vertical panning
- Add 2 flower prefabs
- disable detection of floor edges as walls
- Improve enemy fly-in
First level 3/4th done - Minor script fixes

- Disabled detection of floor edges as walls for realz
- Enhance vertical panning further
- Make some prefabs easier to hit/see