Start game at picked system

![01](https://f.cloud.github.com/assets/1286157/449212/d7a9f4a0-b26b-11e2-83ed-784399a00c03.png)

![02](https://f.cloud.github.com/assets/1286157/449215/080cdf86-b26c-11e2-9392-73532400325b.png)

![03](https://f.cloud.github.com/assets/1286157/449217/20d5485a-b26c-11e2-8dd6-006998e8ce61.png)

After clicking Start Game you'll find yourself in space flying near star object. For multistar systems it is a star with lowest body index.

This new View is an edited copy of SectorView, so there is a lot of duplicating code. Still, I decided it is better to create a new view than messing the original one. 

Future work:
- handle keyboard & mouse input (now you can only navigate via gui elements);
- add possibility to choose start place more precisely (planets, stations);

Let me know if there's something to change/fix ;)