Fix Device Config and Wizard Interaction

.. when you add a device using the wizard from preferences
   it resets the model to reflect the changes made.

Fixes #785

src/Pages.cpp

@@ -1084,6 +1084,7 @@ DevicePage::DevicePage(QWidget *parent, Context *context) : QWidget(parent), con
 
     connect(addButton, SIGNAL(clicked()), this, SLOT(devaddClicked()));
     connect(delButton, SIGNAL(clicked()), this, SLOT(devdelClicked()));
+    connect(context, SIGNAL(configChanged(qint32)), deviceListModel, SLOT(doReset()));
 }
 
 qint32
@@ -1164,6 +1165,15 @@ deviceModel::deviceModel(QObject *parent) : QAbstractTableModel(parent)
     Configuration = all.getList();
 }
 
+void
+deviceModel::doReset()
+{
+    beginResetModel();
+    DeviceConfigurations all;
+    Configuration = all.getList();
+    endResetModel();
+}
+
 int
 deviceModel::rowCount(const QModelIndex &parent) const
 {

src/Pages.h

@@ -235,8 +235,12 @@ class deviceModel : public QAbstractTableModel
         bool insertRows(int position, int rows, const QModelIndex &index=QModelIndex());
         bool removeRows(int position, int rows, const QModelIndex &index=QModelIndex());
 
-
         QList<DeviceConfiguration> Configuration;  // the actual data
+
+    public slots:
+        // config changed by wizard so reset
+        void doReset();
+
  };
 
 class DevicePage : public QWidget