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/settings/test/fixtures/addon1/manifest.webapp

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+{
+  "type": "privileged",
+  "role": "addon",
+  "name": "First Test",
+  "description": "A test add-on that doesn't actually do anything",
+  "developer": {
+    "name": "The Gaia Team"
+  },
+  "content_scripts": [{
+    "matches": "<all_urls>",
+    "js": [],
+    "css": []
+  }]
+}

gaia/apps/settings/test/fixtures/addon2/manifest.webapp

@@ -0,0 +1,14 @@
+{
+  "type": "privileged",
+  "role": "addon",
+  "name": "Second Test",
+  "description": "Another test add-on that doesn't actually do anything",
+  "developer": {
+    "name": "The Gaia Team"
+  },
+  "content_scripts": [{
+    "matches": ["app://settings.gaiamobile.org/index.html"],
+    "js": [],
+    "css": []
+  }]
+}

gaia/apps/settings/test/fixtures/addon3/manifest.webapp

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+{
+  "type": "certified",
+  "role": "addon",
+  "name": "Obsolete add-on",
+  "description": "Test add-on that has an obsolete format and doesn't actually do anything",
+  "developer": {
+    "name": "The Gaia Team"
+  },
+  "customizations": [{
+    "filter": "settings.gaiamobile.org",
+    "css": [],
+    "scripts": []
+  }]
+}

gaia/apps/settings/test/fixtures/imetestapp/manifest.webapp

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+{
+  "name": "LOL Keyboard",
+  "description": "An useless virtual keyboard that sends \\o/.",
+  "type": "privileged",
+  "role": "input",
+  "launch_path": "/settings.html",
+  "developer": {
+    "name": "The Gaia Team",
+    "url": "https://github.com/mozilla-b2g/gaia"
+  },
+  "permissions": {
+    "input": {
+      "description": "Send key events and characters to user focused input fields."
+    }
+  },
+  "inputs": {
+    "lol": {
+      "launch_path": "/index.html",
+      "name": "\\o/",
+      "description": "LOL layout",
+      "types": ["text", "url", "number"]
+    }
+  },
+  "default_locale": "en-US"
+}