Mark deleted channels in /subscription_manager

assets/css/darktheme.css

@@ -28,6 +28,10 @@ body {
   color: rgba(35, 35, 35, 1);
 }
 
+.pure-form input[type="file"] {
+  color: #f0f0f0;
+}
+
 .navbar > .searchbar input {
   background-color: inherit;
   color: inherit;

assets/css/default.css

@@ -1,3 +1,7 @@
+.deleted {
+  background-color: rgb(255, 0, 0, 0.5);
+}
+
 .channel-owner {
   background-color: #008bec;
   color: #fff;