fix keys iterator, stale widget saves

js/kiri.js

@@ -1520,6 +1520,14 @@ self.kiri.copyright = exports.COPYRIGHT;
         oldWidgets.forEach(function(wid) {
             Widget.deleteFromState(wid);
         });
+        // eliminate dangling saved widgets
+        ODB.keys(keys => {
+            keys.forEach(key => {
+                if (newWidgets.indexOf(key.substring(8)) < 0) {
+                    ODB.remove(key);
+                }
+            })
+        }, "ws-save-" ,"ws-savf");
         alert2("workspace saved", 1);
     }
 

js/moto-db.js

@@ -43,9 +43,12 @@ var gs_moto_db = exports;
     SP.keys = function(callback, lower, upper) {
         var out = [];
         this.iterate(function(k,v) {
-            if (k) out.push(k);
+            if (k === null) {
+                callback(out);
+            } else {
+                out.push(k);
+            }
         }, lower, upper, true);
-        callback(out);
     };
 
     SP.iterate = function(callback, lower, upper, nullterm) {