added remix functionality

src/cloud.js

@@ -413,7 +413,8 @@ Cloud.prototype.saveProject = function (ide, onSuccess, onError) {
                     xml: xml,
                     media: ide.hasChangedMedia ?
                         ide.serializer.mediaXML(ide.projectName) : null,
-                    thumbnail: thumbnail
+                    thumbnail: thumbnail,
+                    remixID: ide.stage.remixID
                 };
                 ide.serializer.isCollectingMedia = false;
                 ide.serializer.flushMedia();
@@ -711,25 +712,6 @@ Cloud.prototype.unpublishProject = function (
     );
 };
 
-Cloud.prototype.remixProject = function (
-    projectName,
-    username,
-    onSuccess,
-    onError
-) {
-    this.withCredentialsRequest(
-        'POST',
-        '/projects/' +
-            encodeURIComponent(username) +
-            '/' +
-            encodeURIComponent(projectName) +
-            '/remix',
-        onSuccess,
-        onError,
-        'Could not remix project'
-    );
-};
-
 Cloud.prototype.updateNotes = function (
 	projectName,
     notes,

src/gui.js

@@ -4361,7 +4361,8 @@ IDE_Morph.prototype.rawOpenCloudDataString = function (str) {
             this.serializer.openProject(
                 this.serializer.loadProjectModel(
                     model.childNamed('project'),
-                    this
+                    this,
+                    model.attributes.remixID
                 ),
                 this
             );
@@ -4374,7 +4375,8 @@ IDE_Morph.prototype.rawOpenCloudDataString = function (str) {
         this.serializer.openProject(
             this.serializer.loadProjectModel(
                 model.childNamed('project'),
-                this
+                this,
+                model.attributes.remixID
             ),
             this
         );

src/store.js

@@ -316,7 +316,7 @@ SnapSerializer.prototype.load = function (xmlString, ide) {
     return this.loadProjectModel(this.parse(xmlString), ide);
 };
 
-SnapSerializer.prototype.loadProjectModel = function (xmlNode, ide) {
+SnapSerializer.prototype.loadProjectModel = function (xmlNode, ide, remixID) {
     // public - answer a new Project represented by the given XML top node
     // show a warning if the origin apps differ
 
@@ -331,10 +331,10 @@ SnapSerializer.prototype.loadProjectModel = function (xmlNode, ide) {
                 '\n\nand may be incompatible or fail to load here.'
         );
     }
-    return this.rawLoadProjectModel(xmlNode);
+    return this.rawLoadProjectModel(xmlNode, remixID);
 };
 
-SnapSerializer.prototype.rawLoadProjectModel = function (xmlNode) {
+SnapSerializer.prototype.rawLoadProjectModel = function (xmlNode, remixID) {
     // private
     var myself = this,
         project = {sprites: {}},
@@ -376,6 +376,7 @@ SnapSerializer.prototype.rawLoadProjectModel = function (xmlNode) {
     model.stage = model.project.require('stage');
     StageMorph.prototype.frameRate = 0;
     project.stage = new StageMorph(project.globalVariables);
+    project.stage.remixID = remixID;
     if (Object.prototype.hasOwnProperty.call(
             model.stage.attributes,
             'id'