Refactor extension to webpack

This change is the biggest in the history of the project. The entire
project has been refactored so it is built with webpack.

This involves:
- Creating webpack and npm config files.
- Fixing some bugs in the code due to the fact that webpack uses strict
- Merging some pieces of code which were shared throughout the codebase
(not exhaustive, more work should be done in this direction).
- Splitting the console_inject.js file into separate files (it had 1000+
- Adapting all the build-related files (Makefile, bash scripts, etc.)
- Changing the docs to explain the new build process.
- Changing the Zuul playbook/roles to adapt to the new build process.

Change-Id: I16476d47825461c3a318b3f1a1eddb06b2df2e89
diff --git a/src/static/options/experiments.html b/src/static/options/experiments.html
new file mode 100644
index 0000000..81c8a10
--- /dev/null
+++ b/src/static/options/experiments.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+  <head>
+    <meta charset="utf-8">
+    <title>Experiments</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" href="options.css">
+    <link rel="stylesheet" href="chrome_style/chrome_style.css">
+  </head>
+  <body>
+    <main>
+      <h1 data-i18n="experiments_title"></h1>
+      <p data-i18n="experiments_description"></p>
+      <form>
+        <div class="option"><input type="checkbox" id="threadlistavatars"> <label for="threadlistavatars" data-i18n="threadlistavatars"></label></div>
+        <div class="option"><input type="checkbox" id="autorefreshlist"> <label for="autorefreshlist" data-i18n="autorefreshlist"></label></div>
+        <div class="actions"><button id="save" data-i18n="save"></button></div>
+      </form>
+      <div id="save-indicator"></div>
+    </main>
+    <script src="experiments_bit.js"></script>
+    <script src="../../optionsCommon.bundle.js"></script>
+  </body>