Correctly set the dive site id on the dive

When changing the index of the combobox we were discarting the
dive_site_id. This fixes it.

Now I need to understand what's happening to the globe.

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-models/divelocationmodel.cpp

@@ -25,6 +25,7 @@ QVariant LocationInformationModel::data(const QModelIndex &index, int role) cons
 
 	switch(role) {
 		case Qt::DisplayRole : return qPrintable(ds->name);
+		case DIVE_SITE_UUID  : return ds->uuid;
 	}
 
 	return QVariant();

qt-models/divelocationmodel.h

@@ -6,6 +6,7 @@
 class LocationInformationModel : public QAbstractListModel {
 Q_OBJECT
 public:
+	enum { DIVE_SITE_UUID = Qt::UserRole+1};
 	static LocationInformationModel *instance();
 	int rowCount(const QModelIndex &parent = QModelIndex()) const;
 	QVariant data(const QModelIndex &index = QModelIndex(), int role = Qt::DisplayRole) const;