money related SVG icons

Implements part of #1165 and focuses on money related icons.

The original icons used stroke and fill so I had to change them. I also tried to reduce complexity a bit.
Following symbols are affected:

amenity=atm
![atm](https://cloud.githubusercontent.com/assets/3531092/5517772/31fde69a-88fe-11e4-850b-7aeb3bd4e5af.png)

amenity=bank
![bank](https://cloud.githubusercontent.com/assets/3531092/5517773/394fc774-88fe-11e4-91e0-fc08616f817f.png)