Updated icons and images to match official branding.

Did start working on the UI based on the discussion here.
https://darkcointalk.org/threads/enhanced-darkcoin-wallet-ui.1705/

![Overview](http://i.imgur.com/jYQ9nfJ.png)
![Transactions](http://i.imgur.com/XThTjaE.png)
![Debug Console](http://i.imgur.com/gyMJU0T.png)