Scilab and Scinotes

Both Icons for Scilab #1012
![icons](https://cloud.githubusercontent.com/assets/8478202/5151533/9f8801ae-71df-11e4-881a-3e915bf224e4.png)
![icons](https://cloud.githubusercontent.com/assets/8478202/5151539/b1020aec-71df-11e4-9fbc-a41b1981a2aa.png)