Save window position when closing app from "x" button or Alt+F4

Fix arduino#4404
Fix arduino#4218

Author: cmaglie

app/src/processing/app/Base.java

@@ -956,14 +956,15 @@ public boolean handleClose(Editor editor) {
     editor.internalCloseRunner();
 
     if (editors.size() == 1) {
+      storeSketches();
+
       // This will store the sketch count as zero
       editors.remove(editor);
       try {
         Editor.serialMonitor.close();
       } catch (Exception e) {
         //ignore
       }
-      storeSketches();
       rebuildRecentSketchesMenuItems();
 
       // Save out the current prefs state