Fix project namespaces for web hooks data

app/models/project.rb

@@ -192,7 +192,7 @@ class Project < ActiveRecord::Base
   end
 
   def web_url
-    [Gitlab.config.url, path].join("/")
+    [Gitlab.config.url, path_with_namespace].join("/")
   end
 
   def common_notes

app/roles/push_observer.rb

@@ -114,7 +114,7 @@ module PushObserver
         id: commit.id,
         message: commit.safe_message,
         timestamp: commit.date.xmlschema,
-        url: "#{Gitlab.config.url}/#{path}/commit/#{commit.id}",
+        url: "#{Gitlab.config.url}/#{path_with_namespace}/commit/#{commit.id}",
         author: {
           name: commit.author_name,
           email: commit.author_email