Get rid of some global variables

Remove two global variables storing the application short name which is
the same as the organisation name and the application icon which is only
used in one place.

src/main.cpp

@@ -75,7 +75,7 @@ int main( int argc, char ** argv )
 {
     QApplication a( argc, argv );
     a.setOrganizationName("sqlitebrowser");
-    a.setApplicationName("SQLite Database Browser " + QString(APP_VERSION));
+    a.setApplicationName("SQLite Database Browser");
 
     // Set character encoding to UTF8
     QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));