Camera system, portraits, new sprites

Added moving camera system when moving towards the edges of the screen
(this will require re-working of the positions of the level elements),
portraits during conversations, and added new sprites to the Sprites
folder for use with the conversations

CameraManager should be attached to the Main Camera
Modified CharacterSelect

Added actual names to characters
Merge pull request #13 from alim4/pr/11

Merge into master