Rendering/font family

Finally the font-family support can be merged. (#54)

Developers have to copy the [fonts](https://github.com/SWTI2014/SWTI2014-Project-02/tree/rendering/font-family/build-support/fonts) folder to `Resources/Scamper/fonts`.
Travis and release `sar`-files will copy the fonts automatically.

You may use http://swt-scamper.azurewebsites.net/Scamper-Tests/font-family.html to test the implementation.