Publish Vulpes Preview 15 sources for desktop, Android and Tundra

Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

gaia/apps/sync/manifest.webapp

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+{
+  "name": "Sync",
+  "description": "Syncs data with Firefox Sync",
+  "type": "certified",
+  "role": "system",
+  "launch_path": "/index.html",
+  "developer": {
+     "name": "The Gaia Team",
+     "url": "https://github.com/mozilla-b2g/gaia"
+  },
+  "permissions": {
+    "settings": { "access": "readonly" }
+  },
+  "datastores-owned": {
+    "sync_bookmarks_store": {
+      "access": "readwrite",
+      "description": "View and modify the bookmarks from Firefox Sync."
+    }
+  },
+  "datastores-access": {
+    "places": {
+      "readonly": false,
+      "description": "Stores data about browsing history."
+    },
+    "bookmarks_store": {
+      "readonly": false,
+      "description": "Stores data about browsing history."
+    }
+  },
+  "connections": {
+    "gaia::sync::request": {
+      "description": "Expose a simple API to be woken up on sync requests",
+      "rules": {
+        "minimumAccessLevel": "certified"
+      }
+    }
+  }
+}