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/system/test/marionette/fixtures/callopener.html

@@ -0,0 +1,14 @@
+<html>
+<head>
+  <title>Hyperlink Test Page</title>
+  <meta charset="UTF-8">
+  <meta name="application-name" content="Hyperlink Fixture">
+  <script type="text/javascript">
+    window.opener.alert('caller received');
+    window.close();
+  </script>
+</head>
+<body>
+  Calling opener alert.
+</body>
+</html>