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/bluetooth/test/unit/_message.html

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+  <body role="application">
+    <form role="dialog" data-type="confirm" id="pairing-request-timeout" hidden>
+      <section>
+        <h1 data-l10n-id="pairing-request-timeout-title">Bluetooth Pairing Request</h1>
+        <p data-l10n-id="pairing-request-timeout-description">Bluetooth pairing request expired. Try to pair again.</p>
+      </section>
+      <menu>
+        <button data-l10n-id="ok" class="full recommend" id="incoming-pairing-timeout-confirm">OK</button>
+      </menu>
+    </form>
+  </body>
+</html>