* fixed warnings for overriden node and edge colors
* fixed warnings for edges connecting the wrong node types
* removed tool tip from color scheme
* changed names in project setup screen
* realigned buttons and elements
* fixed retina styles for mac
* removed MessageLoadSource and subsequent functionality
* edit existing project through menu
* browsing paths from the line item in QtDirectoryListBox
* grow QtDirectoryListBox instead of scroll
* take any file or directory as valid path
* fixed new project setup screen background
* fixed screen handling on cancelation
Eberhard Graether