Fix an issue with invalid drive before migration

www/common/userObject.js

@@ -889,6 +889,13 @@ define([
                         element[key] = id;
                         delete element[el];
                     }
+                    if (typeof element[el] === "number") {
+                        var data = files[FILES_DATA][element[el]];
+                        if (!data) {
+                            debug("An element in ROOT doesn't have associated data", element[el], el);
+                            delete element[el];
+                        }
+                    }
                 }
             };
             var fixTrashRoot = function () {
@@ -906,6 +913,14 @@ define([
                         obj.element = id;
                     }
                     if (isFolder(obj.element)) { fixRoot(obj.element); }
+                    if (typeof obj.element === "number") {
+                        var data = files[FILES_DATA][obj.element];
+                        if (!data) {
+                            debug("An element in TRASH doesn't have associated data", obj.element, el);
+                            delete element[el];
+                        }
+                    }
+
                 };
                 for (var el in tr) {
                     if (!Array.isArray(tr[el])) {
@@ -943,6 +958,13 @@ define([
                         files[FILES_DATA][id] = {href: el};
                         us[idx] = id;
                     }
+                    if (typeof el === "number") {
+                        var data = files[FILES_DATA][el];
+                        if (!data) {
+                            debug("An element in TEMPLATE doesn't have associated data", el);
+                            delete element[el];
+                        }
+                    }
                 });
                 toClean.forEach(function (idx) {
                     us.splice(idx, 1);

www/drive/main.js

@@ -1569,7 +1569,7 @@ define([
                 if (prop === 'atime' || prop === 'ctime') {
                     return new Date(data[prop]);
                 }
-                return filesOp.getTitle(id).toLowerCase();
+                return (filesOp.getTitle(id) || "").toLowerCase();
             };
             keys.sort(function(a, b) {
                 if (getProp(a, prop) < getProp(b, prop)) { return mult * -1; }
@@ -1605,7 +1605,7 @@ define([
                         return new Date(e[prop]);
                     }
                 }
-                return el.name.toLowerCase();
+                return (el.name || "").toLowerCase();
             };
             keys.sort(function(a, b) {
                 if (getProp(a, prop) < getProp(b, prop)) { return mult * -1; }