F money connection stroke width

- merging redesign of money connection
- merge money connection mode & master
- relocate coin calculation into money connection model
- fix errors in coin size calulation

Remaining:
The changes in the money connection don't get drawn properly, if it influences another connection. Only after refreshing or dragging the connection looks right. Otherwise there could be a gap between the coin. 

![](http://screencloud.net/img/screenshots/fa9aa0a91aafb5a698841609796f7088.png)

We need to outsource some of the code in the connection view afterRender method. I don't feel comfortable making changes here, since I don't understand the drawing of the svg properly.
Could you have a look @mrflix ?