Detector sees the player (again?)

- Cameras detect when the player is visible
- Player hiding behind boxes is not detected
- NOTE: Only detects the center of the player object. Should be the
whole collider.
- Cleaned up code to remove remaining warnings and nullreferences
- Added or repositioned some cameras on both scenes
Movement detection

- Player is now detected only when they move

main.unity changes:
- Added "Player" tag to Player_PREFAB
- Removed "Player" tag from w_box5_whatever object.
named cameras better, converted cameramanager to generic list and made tag for followcam
camera debug features
Merge pull request #8 from rtab-IGP-2013/Misacorp

aw yiss