Remove trailing slash

data/interfaces/default/css/tautulli.css

@@ -480,7 +480,6 @@ fieldset[disabled] .btn-bright.active {
     height: 32px;
     width: 100%;
     margin-top: 5px;
-    opacity: 0.65;
 }
 #user-selection label {
     margin-bottom: 0;

data/interfaces/default/settings.html

@@ -2437,6 +2437,10 @@ $(document).ready(function() {
         });
     });
 
+    $('#newsletter_base_url').change(function () {
+       $(this).val($(this).val().replace(/\/*$/, ''));
+    });
+
     function apiEnabled() {
         var api_enabled = $('#api_enabled').prop('checked');
         $('#app_api_msg').toggle(!(api_enabled));