Switch to VelocityJS for view transitions, slow down some transitions

webpack.config.js

@@ -77,7 +77,11 @@ baseConfig = {
       {
         include: /html2canvas.js$/,
         loader: 'expose-loader?html2canvas',
-      }
+      },
+      {
+        include: require.resolve('velocity-animate'),
+        loader: 'imports-loader?jQuery=jquery',
+      },
     ]
   }
 };
@@ -123,6 +127,7 @@ config.push(_.extend({}, baseConfig, {
       'sticky-kit',
       'blob',
       'filesaver',
+      'velocity-animate',
 
       'newsletter_editor/communicationsFix.js',
       'newsletter_editor/App',