Remove more internal type conversions

include/core/mapconnection.h

@@ -8,7 +8,7 @@
 class MapConnection {
 public:
     QString direction;
-    QString offset;
+    int offset;
     QString map_name;
 };
 

include/core/maplayout.h

@@ -14,10 +14,10 @@ public:
     static QString layoutConstantFromName(QString mapName);
     QString id;
     QString name;
-    QString width;
-    QString height;
-    QString border_width;
-    QString border_height;
+    int width;
+    int height;
+    int border_width;
+    int border_height;
     QString border_path;
     QString blockdata_path;
     QString tileset_primary_label;