Release Preview 20 shared desktop, Android and Sargo updates

Restore Gaia settings and media workflows, extend native network adapters, and align the APK payload. Generate French/English changelogs and website entries from the simplified JSON source.

Validation: shared JS and Tundra unit tests; desktop workflows and persistence; signed APK payload parity; Sargo RAM and installed startup with boot readback. Android runtime qualification is recorded separately.

gaia/apps/verticalhome/js/stores/item.js

@@ -439,7 +439,8 @@
      */
     populate: function(callback) {
       this.initSources(function(entries) {
-        this.deferredSave(entries, callback);
+        // The first render waits for this write; deferring it waits for that render.
+        this.save(entries, callback);
       }.bind(this));
     },