libs/Common: added CrashCleanup POSIX signal handler
apps/Partyman: added usage of CrashCleanup
apps/Partyman: fixed crash using CommandLineHandler
apps/Rubberbandman: fix for not updating filename when pressing "Get Random Track"
libs/Common: CrashCleanup now works without explicit create() and destroy()
libs/ProxyWidget: added setProxy method for setting QProcess proxy environment variables
libs/Common: added Settings for new application Underpass
libs/Common: settings set by Sorcerer during startup did not show up in application afterwards, restart was needed
apps: added new application Underpass
apps/Partyman: adopted to updated CrashCleanup
resources: better compression on some icons and added windows resource files and icons