* added icons to buttons
* added toggle for collapsing and expanding controls
* added controls visibility to app settings
* fixed low contrast for disabled buttons in bright color scheme
* 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
This change shows the files in the code view minimized, if more than 5. This greatly improves performance, because code
and annotations won't get loaded until needed. Files including declarations or definitions of the active symbol are
still expanded. The number of references in each file is now shown in it's title bar. Clicking the title bar allows for
expanding and collapsing as well now.