Add filter to retrieve number of keys in objects.

services/web/public/coffee/ide/review-panel/ReviewPanelManager.coffee

@@ -10,5 +10,6 @@ define [
 	"ide/review-panel/directives/resolvedCommentsDropdown"
 	"ide/review-panel/directives/reviewPanelCollapseHeight"
 	"ide/review-panel/filters/notEmpty"
+	"ide/review-panel/filters/numKeys"
 	"ide/review-panel/filters/orderOverviewEntries"
 ], () ->

services/web/public/coffee/ide/review-panel/filters/numKeys.coffee

@@ -0,0 +1,5 @@
+define [
+	"base"
+], (App) ->
+	app.filter "numKeys", () ->
+		(object) -> Object.keys(object).length