C3PM updated to v0.3 - New user interface and some bug fixes

So I finally got a nice and simple user interface going. There's also some new bug fixes that will prevent projects being corrupted after importing multiple packs into it.

Bug fixes:

•  Project would corrupt after importing the same pack multiple times

New features: 

• New graphical user interface
• Now it's possible to import the same pack into project more than once in case the pack is needed to be updated