IMPORTANT: I plan on deleting Rotobezier script as soon as we got the new masking tools in Trunk. However since animating curves is still useful for non masking tasks I've:

- Ported Curve animation features from Rotobezier addon to Animall. Rotobezier animated files should be compatible with AnimAll. Left the masking specific features out though.
- Fixed Vertex Color animation for new API
- Updated UVs to new API, however this still doesn't work because of bug #31631
- Vertex Groups also don't work because of bug #31632, however code still looked alright.