Fix description for external editors.

editor/external.ts

@@ -393,7 +393,7 @@ module TDev {
 
           default:
             // Apparently the runtime loop of the simulator is implemented using
-            // messages on any origins... see [rt/util.ts]. So just don't do
+            // messages sent to all origins... see [rt/util.ts]. So just don't do
             // anything if we receive an unrecognized message.
             break;
         }

editor/messages.ts

@@ -108,7 +108,7 @@ module TDev {
 
         export interface Metadata {
             name: string;
-            description: string;
+            comment: string;
         }
 
         // In case local and remote modifications have been posted on top of the same cloud

www/ace/ace-main.ts

@@ -113,7 +113,7 @@ module TDev {
                     baseSnapshot: currentVersion,
                     metadata: {
                         name: scriptName,
-                        description: ""
+                        comment: ""
                     }
                 },
             };

www/blockly/blockly-main.ts

@@ -167,12 +167,12 @@ module TDev {
     var theirsButton = mkButton("🔍", "see theirs", () => {
       loadBlockly(merge.theirs.scriptText);
       setName(merge.theirs.metadata.name);
-      setDescription(merge.theirs.metadata.description);
+      setDescription(merge.theirs.metadata.comment);
     });
     var baseButton = mkButton("🔍", "see base", () => {
       loadBlockly(merge.base.scriptText);
       setName(merge.base.metadata.name);
-      setDescription(merge.base.metadata.description);
+      setDescription(merge.base.metadata.comment);
     });
     var mergeButton = mkButton("👍", "finish merge", () => {
       inMerge = false;
@@ -318,7 +318,7 @@ module TDev {
     });
 
     setName(message.script.metadata.name);
-    setDescription(message.script.metadata.description);
+    setDescription(message.script.metadata.comment);
 
     // That's triggered when the user closes or reloads the whole page, but
     // doesn't help if the user hits the "back" button in our UI.
@@ -365,7 +365,7 @@ module TDev {
         baseSnapshot: currentVersion,
         metadata: {
           name: getName(),
-          description: getDescription()
+          comment: getDescription()
         }
       },
     });