added Common namespace. cli: use settings instead of env for db path

shared/common.cpp

@@ -0,0 +1,8 @@
+#include "common.h"
+
+void Common::setupAppInfo()
+{
+	QCoreApplication::setOrganizationName("quitesimple.org");
+	QCoreApplication::setOrganizationDomain("quitesimple.org");
+	QCoreApplication::setApplicationName("qss");
+}