Merge branch 'new-schema'

The Rust portions of the merge are straightforward, but the Javascript
is not. The new-schema branch is based on my hacky prototype UI; the
master branch is based on Dolf's rewrite. I attempted to match the
new-schema changes in Dolf's new structure.

ui-src/lib/models/Recording.js

@@ -46,24 +46,31 @@ export default class Recording extends JsonWrapper {
     super(recordingJson);
   }
 
-  /**
-   * Get recording's startId.
-   *
-   * @return {String} startId for recording
-   */
+  /** @return {Number} */
   get startId() {
     return this.json.startId;
   }
 
-  /**
-   * Get recording's endId.
-   *
-   * @return {String} endId for recording
-   */
+  /** @return {Number} */
   get endId() {
     return this.json.endId;
   }
 
+  /** @return {Number} */
+  get openId() {
+    return this.json.openId;
+  }
+
+  /** @return {Number} or undefined */
+  get firstUncommitted() {
+    return this.json.firstUncommitted;
+  }
+
+  /** @return {Boolean} or undefined */
+  get growing() {
+    return this.json.growing;
+  }
+
   /**
    * Return start time of recording in 90k units.
    * @return {Number} Time in units of 90k parts of a second