display next refresh date

src/main/webapp/js/filters.js

@@ -1,7 +1,11 @@
 var module = angular.module('commafeed.filters', []);
 
 module.filter('entryDate', function() {
-	return function(timestamp) {
+	return function(timestamp, defaultValue) {
+		if (!timestamp) {
+			return defaultValue;
+		}
+		
 		var d = moment(timestamp);
 		var now = moment();
 		var formatted;

src/main/webapp/templates/feeds.feed_details.html

@@ -33,6 +33,13 @@
 				<span>{{sub.lastRefresh|entryDate}}</span>
 			</div>
 		</div>
+		
+		<div class="control-group">
+			<label class="control-label">${details.next_refresh}</label>
+			<div class="controls horizontal-align">
+				<span>{{sub.nextRefresh|entryDate:'${details.queued_for_refresh}' }}</span>
+			</div>
+		</div>
 
 		<div class="control-group">
 			<label class="control-label">${details.feed_url}</label>