* updated spacings and colors in QtCodeView and QtCodeFile
* using Source Code Pro Regular (had to remove light cut from the Fonts folder because it got always used)
* updated syntax highlighted colors to fit design
* changed colors of highlights
* indent all QtCodeSnippets by maximum line number in QtCodeFile
* fixed syntax highlighting to work with sole multiline comment end
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This change refactors parts of the QtCodeSnippet and places some settings into ApplicationSettings.
Additionally Application- and ProjectSettings were abstracted to the common base class Settings, which takes care of the
getting and setting values of the Configmanager member.
Eberhard Graether