vue navbar: add video tutorial link

cateditor/src/components/Navbar.vue

@@ -1,6 +1,5 @@
 <template>
   <v-app-bar dark dense absolute app color="keen_dark_grey">
-    <!-- <v-toolbar-side-icon></v-toolbar-side-icon> -->
     <img class="pr-4" src="/static/img/keen_logo.svg" width="100">
     <v-toolbar-title color="primary" class="headline">
       <span>ProCatalog</span>
@@ -16,7 +15,19 @@
         </template>
         <v-list class="navbar-menu ma-0 pa-0">
           <v-list-item dense class="navbar-menu-item">
-            <v-btn text small href="mailto:support@procatalog.io?Subject=Keen%20ProCatalog%20support%20request" class="navbar-menu-button">Email Support</v-btn>
+            <v-btn
+              text
+              small
+              href="mailto:support@procatalog.io?Subject=Keen%20ProCatalog%20support%20request"
+              class="navbar-menu-button">Email Support</v-btn>
+          </v-list-item>
+          <v-list-item dense class="navbar-menu-item">
+            <v-btn
+              text
+              small
+              href="https://keenfootwear.wistia.com/medias/ld970jfi9o"
+              target="_blank"
+              class="navbar-menu-button">Catalog making tutorial</v-btn>
           </v-list-item>
         </v-list>
       </v-menu>