Series monitored visible on seasons/episodes on details page and episode details modal

New: Visual indication on season/episode when series is not monitored
New: Prevent changing monitored state when series is not monitored

src/UI/Cells/EpisodeMonitoredCell.js

@@ -0,0 +1,31 @@
+'use strict';
+
+define(
+    [
+        'Cells/ToggleCell',
+        'Series/SeriesCollection',
+        'Shared/Messenger'
+    ], function (ToggleCell, SeriesCollection, Messenger) {
+        return ToggleCell.extend({
+
+            className: 'toggle-cell episode-monitored',
+
+            _originalOnClick: ToggleCell.prototype._onClick,
+
+            _onClick: function () {
+                var series = SeriesCollection.get(this.model.get('seriesId'));
+
+                if (!series.get('monitored')) {
+
+                    Messenger.show({
+                        message: 'Unable to change monitored state when series is not monitored',
+                        type   : 'error'
+                    });
+
+                    return;
+                }
+
+                this._originalOnClick.apply(this, arguments);
+            }
+        });
+    });