Added individual signatures for every identity.

dev/Stores/User/Identity.js

@@ -4,6 +4,7 @@
 	'use strict';
 
 	var
+		_ = require('_'),
 		ko = require('ko')
 	;
 
@@ -14,6 +15,12 @@
 	{
 		this.identities = ko.observableArray([]);
 		this.identities.loading = ko.observable(false).extend({'throttle': 100});
+
+		this.identitiesIDS = ko.computed(function () {
+			return _.compact(_.map(this.identities(), function (oItem) {
+				return oItem ? oItem.id : null;
+			}));
+		}, this);
 	}
 
 	module.exports = new IdentityUserStore();