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.

assets/webapps/test-receiver-2.gaiamobile.org/index.html

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1">
+    <meta charset="utf-8">
+    <title>Test Receiver</title>
+  </head>
+  <body>
+    <h1>Test multi activities receiver#2</h1>
+    <p><i>This test app is here for so that the uitest app will have
+    more than one activity target to invoke.</i></p>
+  </body>
+</html>

assets/webapps/test-receiver-2.gaiamobile.org/manifest.webapp

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+{"name":"Test Receiver#2","description":"Dummy app to respond to Test web activities","launch_path":"/index.html","developer":{"name":"The Gaia Team","url":"https://github.com/mozilla-b2g/gaia"},"activities":{"test":{"filters":{"type":"text"},"disposition":"window"}},"icons":{"84":"/style/icons/test-receiver_84.png","126":"/style/icons/test-receiver_126.png","142":"/style/icons/test-receiver_142.png","189":"/style/icons/test-receiver_189.png","284":"/style/icons/test-receiver_284.png"},"origin":"app://test-receiver-2.gaiamobile.org","version":"2.5"}