Move new note marker to click location

If not done, it's possible to lose the marker when starting from low zooms.

app/assets/javascripts/index/new_note.js

@@ -107,6 +107,12 @@ OSM.NewNote = function (map) {
     newNoteMarker = null;
   }
 
+  function moveNewNotMarkerToClick(e) {
+    if (newNoteMarker) newNoteMarker.setLatLng(e.latlng);
+    if (halo) halo.setLatLng(e.latlng);
+    content.find("textarea").focus();
+  }
+
   function updateControls() {
     const zoomedOut = addNoteButton.hasClass("disabled");
     const withoutText = content.find("textarea").val() === "";
@@ -162,13 +168,15 @@ OSM.NewNote = function (map) {
       });
     });
 
+    map.on("click", moveNewNotMarkerToClick);
     addNoteButton.on("disabled enabled", updateControls);
     updateControls();
 
     return map.getState();
   };
 
   page.unload = function () {
+    map.off("click", moveNewNotMarkerToClick);
     addNoteButton.off("disabled enabled", updateControls);
     removeNewNoteMarker();
     addNoteButton.removeClass("active");