Add new font for blockquotes

projects/editor/src/assets/ptsans.css

+@font-face {
+  font-family: "PT Sans";
+  src: url(fonts/ptsans.woff2) format("woff");
+}

projects/editor/src/index.html

@@ -7,6 +7,7 @@
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <link rel="icon" type="image/x-icon" href="favicon.ico">
   <link href="assets/roboto.css" rel="stylesheet">
+  <link href="assets/ptsans.css" rel="stylesheet">
   <link href="assets/material-icons.css" rel="stylesheet">
   <script>
     window.postMessage({

projects/editor/src/styles.css

@@ -50,6 +50,7 @@ blockquote:before {
   content: open-quote;
   font-size: 2.5em;
   padding-right: 3px;
+  font-family: 'PT Sans', sans-serif;
 }
 
 blockquote:after {
@@ -58,6 +59,7 @@ blockquote:after {
   vertical-align: middle;
   padding-top: 0.3em;
   padding-left: 3px;
+  font-family: 'PT Sans', sans-serif;
 }
 
 blockquote p {

projects/player/src/assets/ptsans.css

+@font-face {
+  font-family: "PT Sans";
+  src: url(fonts/ptsans.woff2) format("woff");
+}

projects/player/src/styles.css

@@ -17,6 +17,7 @@ blockquote:before {
   content: open-quote;
   font-size: 2.5em;
   padding-right: 3px;
+  font-family: 'PT Sans', sans-serif;
 }
 
 blockquote:after {
@@ -25,6 +26,7 @@ blockquote:after {
   vertical-align: middle;
   padding-top: 0.3em;
   padding-left: 3px;
+  font-family: 'PT Sans', sans-serif;
 }
 
 blockquote p {