Set application and organization name to enable using QSettings

QSettings can be used to store the latest folder used to open or save
files. Instead of repeatedly passing the application and organization
names to the QSettings member functions, they are set globally.

src/main/main.cpp

@@ -101,6 +101,9 @@ int main(int argc, char *argv[])
     Q_INIT_RESOURCE(haloray);
     initializeLogging();
 
+    QCoreApplication::setOrganizationName("Other Computer Software");
+    QCoreApplication::setApplicationName("HaloRay");
+
     QGuiApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
     QGuiApplication::setAttribute(Qt::AA_ShareOpenGLContexts);
     QGuiApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);