Refactored code to comply with Google Style Guides

This commit refactors JS, MD and Bash files in order to comply with the
Google style guides.

Change-Id: I5bc9a175d2400fa1095ba9eb1c8cff3ebfef4b8f
diff --git a/src/console_inject.js b/src/console_inject.js
index c97483b..646beba 100644
--- a/src/console_inject.js
+++ b/src/console_inject.js
@@ -9,35 +9,43 @@
   }
 
   return {
-    "forum": forum_a[1],
-    "thread": thread_a[1]
+    'forum': forum_a[1],
+    'thread': thread_a[1],
   };
 }
 
 function mutationCallback(mutationList, observer) {
   mutationList.forEach((mutation) => {
-    if (mutation.type == "childList") {
-      mutation.addedNodes.forEach(function (node) {
-        if (typeof node.classList !== "undefined") {
-          if (options.thread && node.classList.contains("load-more-bar")) {
-            intersectionObserver.observe(node.querySelector(".load-more-button"));
+    if (mutation.type == 'childList') {
+      mutation.addedNodes.forEach(function(node) {
+        if (typeof node.classList !== 'undefined') {
+          if (options.thread && node.classList.contains('load-more-bar')) {
+            intersectionObserver.observe(
+                node.querySelector('.load-more-button'));
           }
 
-          if (options.threadall && node.classList.contains("load-more-bar")) {
-            intersectionObserver.observe(node.querySelector(".load-all-button"));
+          if (options.threadall && node.classList.contains('load-more-bar')) {
+            intersectionObserver.observe(
+                node.querySelector('.load-all-button'));
           }
 
-          if (options.history && ("parentNode" in node) && node.parentNode !== null && ("tagName" in node.parentNode) && node.parentNode.tagName == "EC-USER") {
-            var nameElement = node.querySelector(".name span");
+          if (options.history && ('parentNode' in node) &&
+              node.parentNode !== null && ('tagName' in node.parentNode) &&
+              node.parentNode.tagName == 'EC-USER') {
+            var nameElement = node.querySelector('.name span');
             if (nameElement !== null) {
               var name = nameElement.innerHTML;
-              var query = encodeURIComponent("(creator:\""+name+"\" | replier:\""+name+"\") -forum:0");
-              var urlpart = encodeURIComponent("query="+query);
-              var link = document.createElement("a");
-              link.setAttribute("href", "https://support.google.com/s/community/search/"+urlpart);
-              link.innerText = chrome.i18n.getMessage("inject_previousposts");
-              node.querySelector(".main-card-content").appendChild(document.createElement("br"));
-              node.querySelector(".main-card-content").appendChild(link);
+              var query = encodeURIComponent(
+                  '(creator:"' + name + '" | replier:"' + name + '") -forum:0');
+              var urlpart = encodeURIComponent('query=' + query);
+              var link = document.createElement('a');
+              link.setAttribute(
+                  'href',
+                  'https://support.google.com/s/community/search/' + urlpart);
+              link.innerText = chrome.i18n.getMessage('inject_previousposts');
+              node.querySelector('.main-card-content')
+                  .appendChild(document.createElement('br'));
+              node.querySelector('.main-card-content').appendChild(link);
             }
           }
         }
@@ -56,40 +64,46 @@
 
 function injectStyles(css) {
   var link = document.createElement('link');
-  link.setAttribute("rel", "stylesheet");
-  link.setAttribute("href", "data:text/css;charset=UTF-8,"+encodeURIComponent(css));
+  link.setAttribute('rel', 'stylesheet');
+  link.setAttribute(
+      'href', 'data:text/css;charset=UTF-8,' + encodeURIComponent(css));
   document.head.appendChild(link);
 }
 
 var observerOptions = {
   childList: true,
   attributes: true,
-  subtree: true
+  subtree: true,
 }
 
-var intersectionOptions = {
-  root: document.querySelector('.scrollable-content'),
-  rootMargin: '0px',
-  threshold: 1.0
-}
+var intersectionOptions =
+    {
+      root: document.querySelector('.scrollable-content'),
+      rootMargin: '0px',
+      threshold: 1.0,
+    }
 
-chrome.storage.sync.get(null, function(items) {
-  options = items;
+    chrome.storage.sync.get(null, function(items) {
+      options = items;
 
-  mutationObserver = new MutationObserver(mutationCallback);
-  mutationObserver.observe(document.querySelector(".scrollable-content"), observerOptions);
+      mutationObserver = new MutationObserver(mutationCallback);
+      mutationObserver.observe(
+          document.querySelector('.scrollable-content'), observerOptions);
 
-  intersectionObserver = new IntersectionObserver(intersectionCallback, intersectionOptions);
+      intersectionObserver =
+          new IntersectionObserver(intersectionCallback, intersectionOptions);
 
-  if (options.fixedtoolbar) {
-    injectStyles("ec-bulk-actions{position: sticky; top: 0; background: white; z-index: 96;}");
-  }
+      if (options.fixedtoolbar) {
+        injectStyles(
+            'ec-bulk-actions{position: sticky; top: 0; background: white; z-index: 96;}');
+      }
 
-  if (options.increasecontrast) {
-    injectStyles(".thread-summary.read{background: #ecedee!important;}");
-  }
+      if (options.increasecontrast) {
+        injectStyles('.thread-summary.read{background: #ecedee!important;}');
+      }
 
-  if (options.stickysidebarheaders) {
-    injectStyles("material-drawer .main-header{background: #fff; position: sticky; top: 0; z-index: 1;}");
-  }
-});
+      if (options.stickysidebarheaders) {
+        injectStyles(
+            'material-drawer .main-header{background: #fff; position: sticky; top: 0; z-index: 1;}');
+      }
+    });