settings: implement new settings system
add system/settings with setting descriptions in XML
CUtil: add ValidatePort() method
settings: integrate new settings system into CSettings
settings: replace CSettings and CGUISettings with new CSettings
added actions settingsreset and settingslevelchange
add SettingLevel to CViewStateSettings
CGUISpinControl: support (string, string) entries
settings: integrate new settings system into GUI
[win32] update VS project files
[confluence] add sidebar to settings view