Mouse Rig 03

Latest fixes:

Eye expression blendshapes
Tongue flattened
Belly repainted and scale attribute added to belly control
Nose scales down a bit when you push it into the face

Mouse Rig file:
https://docs.google.com/file/d/0B_IqaAragbK8bG45M0pYQ3dyYXc/edit?usp=sharing

Mouse Reference file:
https://docs.google.com/file/d/0B_IqaAragbK8aG13aW53OGdZNzQ/edit?usp=sharing