font-awesome

applications/welcome/static/css/web2py-bootstrap4.css

@@ -321,3 +321,20 @@ td.w2p_fc,
 input[type=checkbox], input[type=radio] {
     margin: 4px 4px 0 0;
 }
+
+/* for backward compatbility with pre-font-awesome */
+.icon.plus,.icon.arrowleft,.icon.download,.icon.trash,.icon.pen,.icon.arrowright,.icon.magnifier {
+    display: inline-block;
+    font: normal normal normal 14px/1 FontAwesome;
+    font-size: inherit;
+    text-rendering: auto;
+    -webkit-font-smoothing: antialiased;
+    -moz-osx-font-smoothing: grayscale;
+}
+.icon.plus:before { content: "\f067";}
+.icon.arrowleft:before { content: "\f060";}
+.icon.download:before { content: "\f019";}
+.icon.trash:before { content: "\f1f8";}
+.icon.pen:before { content: "\f040";}
+.icon.arrowright:before { content: "\f061";}
+.icon.magnifier:before { content: "\f002";}

applications/welcome/views/default/index.html

@@ -23,7 +23,7 @@
 </ol>
 <center style="padding:50px">
   <a class="btn btn-primary" href="{{=URL('admin','default','index')}}">
-    <i class="glyphicon glyphicon-cog"></i>
+    <i class="fa fa-cog"></i>
     {{=T("admin")}}
   </a>
   <a class="btn btn-secondary" href="{{=URL('examples','default','index')}}">{{=T("Online examples")}}</a>

applications/welcome/views/layout.html

@@ -20,6 +20,7 @@
          http://google.com/webmasters -->
     <meta name="google-site-verification" content="">
     <!-- include stylesheets -->
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"/>
     <link rel="stylesheet" href="{{=URL('static','css/bootstrap.min.css')}}"/>
     <link rel="stylesheet" href="{{=URL('static','css/web2py-bootstrap4.css')}}"/>
     <link rel="shortcut icon" href="{{=URL('static','images/favicon.ico')}}" type="image/x-icon">