settings: move resolution/calibration settings to CDisplaySettings
settings: move current resolution settings to CDisplaySettings
settings: move SetLanguage from CGUISettings to CApplication
settings: move replaygain settings from CGUISettings to CAudioDecoder
move profile related files into new "profiles" directory
settings: move profile settings to CProfilesManager
settings: remove unused method ToWatchContent
cosmetics: cleanup unused Settings.h includes
[win32] update VS project files
[osx/ios/atv2] - sync xcode projects
Merge pull request #2531 from Montellese/settings_cleanup_4

more settings cleanup (introducing CDisplaySettings and CProfilesManager)