* stretch at end of preferences
* space at scrollbar
* default font size
* only refresh project when something changed
* fixed sizing of text fields
* icons fit to font size
* use em base sizes
* added language to project type label
* switched to QGridLayout for wizzard content layouting
* distinguish scrollable windows based on content
* content can define window size
* removed QtApplicationSettingsScreen, now done via QtProjectWizzardWindow and QtProjectWizzardContentPreferences
* added new project icon
malte_langkabel