Issues, MR, Wall can be enabled/disabled per project

app/controllers/issues_controller.rb

@@ -1,6 +1,7 @@
 class IssuesController < ApplicationController
   before_filter :authenticate_user!
   before_filter :project
+  before_filter :module_enabled
   before_filter :issue, :only => [:edit, :update, :destroy, :show]
   layout "project"
 
@@ -132,4 +133,8 @@ class IssuesController < ApplicationController
   def authorize_admin_issue!
     can?(current_user, :admin_issue, @issue)
   end
+
+  def module_enabled
+    return render_404 unless @project.issues_enabled
+  end
 end

app/controllers/merge_requests_controller.rb

@@ -1,6 +1,7 @@
 class MergeRequestsController < ApplicationController
   before_filter :authenticate_user!
   before_filter :project
+  before_filter :module_enabled
   before_filter :merge_request, :only => [:edit, :update, :destroy, :show, :commits, :diffs]
   layout "project"
 
@@ -114,4 +115,8 @@ class MergeRequestsController < ApplicationController
   def authorize_admin_merge_request!
     can?(current_user, :admin_merge_request, @merge_request)
   end
+
+  def module_enabled
+    return render_404 unless @project.merge_requests_enabled
+  end
 end

app/controllers/projects_controller.rb

@@ -85,6 +85,8 @@ class ProjectsController < ApplicationController
   #
 
   def wall
+    return render_404 unless @project.wall_enabled
+
     @note = Note.new
     @notes = @project.common_notes.order("created_at DESC")
     @notes = @notes.fresh.limit(20)