[welcomeq] Coding style

- a R/W property isn't CONSTANT
 - apply calamaresstyle

src/modules/welcomeq/Config.cpp

@@ -23,6 +23,4 @@ Config::Config()
 {
 }
 
-Config::~Config()
-{
-}
+Config::~Config() {}

src/modules/welcomeq/Config.h

@@ -16,8 +16,8 @@
  *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef WELCOME_CONFIG_H
-#define WELCOME_CONFIG_H
+#ifndef WELCOMEQ_CONFIG_H
+#define WELCOMEQ_CONFIG_H
 
 #include <QObject>
 #include <QUrl>
@@ -25,7 +25,7 @@
 class Config : public QObject
 {
     Q_OBJECT
-    Q_PROPERTY( QUrl helpUrl READ helpUrl WRITE setHelpUrl CONSTANT )
+    Q_PROPERTY( QUrl helpUrl READ helpUrl WRITE setHelpUrl )
 public:
     Config();
     virtual ~Config();