fixes #1068

threw in also a better list:string widget repr for bs3

Updated also the bootswatch theme because something was wrong

applications/welcome/views/layout.html

@@ -46,7 +46,7 @@
   </head>
   <body>
     <!--[if lt IE 8]><p class="browserupgrade">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience.</p><![endif]-->
-    <div class="flash alert alert-dismissable">{{=response.flash or ''}}</div>
+    <div class="w2p_flash alert alert-dismissable">{{=response.flash or ''}}</div>
     <!-- Navbar ======================================= -->
     <nav class="navbar navbar-default navbar-fixed-top" role="navigation">
       <div class="container-fluid">