Changed splash screen and background image

* closes #40 
* adjusted info label location (splash screen)
* removed splash screen progress bar TODO - won't add
* enhanced changelog by using html tags

Image of new splash screen:

![splashscreen](https://f.cloud.github.com/assets/1448874/682958/855e7190-d9d4-11e2-80f8-6eea1fae796e.jpg)