Fix the fix for #850. When generating assertions, the links on the pick_email screen turned blue.

resources/static/dialog/css/popup.css

@@ -397,7 +397,7 @@ label[for=remember] {
   line-height: 18px;
 }
 
-.waiting .vertical a {
+#back.cancelVerify {
   background-color: transparent;
   color: #549FDC;
   font-size: 1em;