diff --git a/downloads/index.html b/downloads/index.html
index 7b90a5f456..e704c6c109 100644
--- a/downloads/index.html
+++ b/downloads/index.html
@@ -21,6 +21,8 @@
+
+
diff --git a/guide/index.html b/guide/index.html
index 931fd54370..445c8e5c91 100644
--- a/guide/index.html
+++ b/guide/index.html
@@ -19,6 +19,8 @@
+
+
diff --git a/index.html b/index.html
index d33ad19252..fbcd6e2a51 100644
--- a/index.html
+++ b/index.html
@@ -20,6 +20,8 @@
+
+
diff --git a/install/index.html b/install/index.html
index 8c958e8100..ff1379b31f 100644
--- a/install/index.html
+++ b/install/index.html
@@ -19,6 +19,8 @@
+
+
diff --git a/static/scripts/custom/polyfills.js b/static/scripts/custom/polyfills.js
new file mode 100644
index 0000000000..735d6cbc09
--- /dev/null
+++ b/static/scripts/custom/polyfills.js
@@ -0,0 +1,15 @@
+// Polyfill from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes
+if (!String.prototype.includes) {
+ String.prototype.includes = function(search, start) {
+ 'use strict';
+ if (typeof start !== 'number') {
+ start = 0;
+ }
+
+ if (start + search.length > this.length) {
+ return false;
+ } else {
+ return this.indexOf(search, start) !== -1;
+ }
+ };
+}