Simplify saving the map list tab

include/config.h

@@ -22,12 +22,6 @@ static const QVersionNumber porymapVersion = QVersionNumber::fromString(PORYMAP_
 
 #define CONFIG_BACKWARDS_COMPATABILITY
 
-enum MapSortOrder {
-    SortByGroup   =  0,
-    SortByArea    =  1,
-    SortByLayout  =  2,
-};
-
 class KeyValueConfigBase
 {
 public:
@@ -56,7 +50,7 @@ public:
         this->recentProjects.clear();
         this->projectManuallyClosed = false;
         this->reopenOnLaunch = true;
-        this->mapSortOrder = MapSortOrder::SortByGroup;
+        this->mapListTab = 0;
         this->prettyCursors = true;
         this->mirrorConnectingMaps = true;
         this->showDiveEmergeMaps = false;
@@ -107,7 +101,7 @@ public:
 
     bool reopenOnLaunch;
     bool projectManuallyClosed;
-    MapSortOrder mapSortOrder;
+    int mapListTab;
     bool prettyCursors;
     bool mirrorConnectingMaps;
     bool showDiveEmergeMaps;

include/mainwindow.h

@@ -242,11 +242,7 @@ private slots:
     void on_toolButton_Move_clicked();
     void on_toolButton_Shift_clicked();
 
-    void on_mapListContainer_currentChanged(int index);
     void onOpenMapListContextMenu(const QPoint &point);
-    void onAddNewMapToGroupClick(QAction* triggeredAction);
-    void onAddNewMapToAreaClick(QAction* triggeredAction);
-    void onAddNewMapToLayoutClick(QAction* triggeredAction);
     void currentMetatilesSelectionChanged();
 
     void on_action_Export_Map_Image_triggered();
@@ -393,6 +389,7 @@ private:
     void mapListRemoveArea();
     void mapListRemoveLayout();
     void openMapListItem(const QModelIndex &index);
+    void saveMapListTab(int index);
 
     void displayMapProperties();
     void checkToolButtons();

include/ui/newmappopup.h

@@ -24,7 +24,7 @@ public:
     QString layoutId;
     void init();
     void initUi();
-    void init(MapSortOrder type, QVariant data);
+    void init(int tabIndex, QVariant data);
     void init(Layout *);
     static void setDefaultSettings(Project *project);