QtMiner refactored + graphical user interface

For a personal project I have done a complete rewrite of qtminer, which is based on cpp-ethereum and should also compile fine against genoils miner for example (I cannot test it because I don't have any NVidia card). The huge difference to other graphical user interfaces is that the miner and the user interface are actually the same application, so there is no interprocess communication at all (parsing of console output etc.). Because of that, it can directly access all mining stats.

Everything is Open Source licensed under AGPLv3: https://github.com/cybercatalyst/ethereumminer

Maybe someone may find this useful.