Render map properly when changing between setting tabs

app/assets/javascripts/application.js

@@ -81,6 +81,7 @@
 //= require managers
 //= require globalize
 //= require send_admin_notification_alert
+//= require settings
 
 var initialize_modules = function() {
   App.Comments.initialize();
@@ -127,6 +128,7 @@ var initialize_modules = function() {
   App.Managers.initialize();
   App.Globalize.initialize();
   App.SendAdminNotificationAlert.initialize();
+  App.Settings.initialize();
 };
 
 $(function(){

app/assets/javascripts/settings.js.coffee

@@ -0,0 +1,10 @@
+App.Settings =
+
+  initialize: ->
+
+    $("#settings-tabs").on "change.zf.tabs", ->
+      if $("#tab-map-configuration:visible").length
+        map_container = L.DomUtil.get "admin-map"
+        unless map_container is null
+          map_container._leaflet_id = null
+        App.Map.initialize()