Fixed emerald-decorator.svg

Fixed outline + symbol shadow.

Before:
![emerald-old](https://cloud.githubusercontent.com/assets/7050624/5457284/b73bfe86-8549-11e4-9b0e-614544bbfd63.png)


After:
![emerald-new](https://cloud.githubusercontent.com/assets/7050624/5457287/bc155718-8549-11e4-9bea-682f106692e2.png)