feat: preparing a migration to the new reader activation mechanism. Right now module will be active when the first successful read will be achieved. From now the initial value for the module will be taken from the persistent storage (leveldb) that keeps the last read value.

Stats/Views/CombinedView.swift

@@ -168,7 +168,9 @@ private class Popup: NSStackView, Popup_p {
         }
         
         let h = CGFloat(availableModules.count) * Constants.Popup.portalHeight + (CGFloat(availableModules.count-1)*Constants.Popup.spacing)
-        self.setFrameSize(NSSize(width: self.frame.width, height: h))
-        self.sizeCallback?(self.frame.size)
+        if h > 0 {
+            self.setFrameSize(NSSize(width: self.frame.width, height: h))
+            self.sizeCallback?(self.frame.size)
+        }
     }
 }