diff --git a/app/controllers/boards/issues_controller.rb b/app/controllers/boards/issues_controller.rb
index 7d7ff217e5d..09e143c23e8 100644
--- a/app/controllers/boards/issues_controller.rb
+++ b/app/controllers/boards/issues_controller.rb
@@ -94,7 +94,7 @@ module Boards
 
     def serialize_as_json(resource)
       resource.as_json(
-        only: [:id, :iid, :project_id, :title, :confidential, :due_date, :relative_position],
+        only: [:id, :iid, :project_id, :title, :confidential, :due_date, :relative_position, :weight],
         labels: true,
         issue_endpoints: true,
         include_full_project_path: board.group_board?,
diff --git a/app/controllers/profiles/keys_controller.rb b/app/controllers/profiles/keys_controller.rb
index f0e5d2aa94e..12a6cd11f80 100644
--- a/app/controllers/profiles/keys_controller.rb
+++ b/app/controllers/profiles/keys_controller.rb
@@ -23,7 +23,7 @@ class Profiles::KeysController < Profiles::ApplicationController
 
   def destroy
     @key = current_user.keys.find(params[:id])
-    @key.destroy
+    Keys::DestroyService.new(current_user).execute(@key)
 
     respond_to do |format|
       format.html { redirect_to profile_keys_url, status: 302 }
diff --git a/app/controllers/projects/settings/integrations_controller.rb b/app/controllers/projects/settings/integrations_controller.rb
index 1ff08cce8cb..d9fecfecc40 100644
--- a/app/controllers/projects/settings/integrations_controller.rb
+++ b/app/controllers/projects/settings/integrations_controller.rb
@@ -11,7 +11,14 @@ module Projects
         @hook = ProjectHook.new
 
         # Services
-        @services = @project.find_or_initialize_services
+        @services = @project.find_or_initialize_services(exceptions: service_exceptions)
+      end
+
+      private
+
+      # Returns a list of services that should be hidden from the list
+      def service_exceptions
+        @project.disabled_services.dup
       end
     end
   end
diff --git a/app/models/project.rb b/app/models/project.rb
index 0975e64e995..35c873830a7 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -997,7 +997,7 @@ class Project < ActiveRecord::Base
 
     available_services_names = Service.available_services_names - exceptions
 
-    available_services_names.map do |service_name|
+    available_services = available_services_names.map do |service_name|
       service = find_service(services, service_name)
 
       if service
@@ -1014,6 +1014,14 @@ class Project < ActiveRecord::Base
         end
       end
     end
+
+    available_services.reject do |service|
+      disabled_services.include?(service.to_param)
+    end
+  end
+
+  def disabled_services
+    []
   end
 
   def find_or_initialize_service(name)
diff --git a/app/services/keys/base_service.rb b/app/services/keys/base_service.rb
index f78791932a7..df8e82f5f60 100644
--- a/app/services/keys/base_service.rb
+++ b/app/services/keys/base_service.rb
@@ -2,7 +2,7 @@ module Keys
   class BaseService
     attr_accessor :user, :params
 
-    def initialize(user, params)
+    def initialize(user, params = {})
       @user, @params = user, params
       @ip_address = @params.delete(:ip_address)
     end
diff --git a/app/services/keys/destroy_service.rb b/app/services/keys/destroy_service.rb
new file mode 100644
index 00000000000..785cfa3a1d8
--- /dev/null
+++ b/app/services/keys/destroy_service.rb
@@ -0,0 +1,12 @@
+module Keys
+  class DestroyService < ::Keys::BaseService
+    def execute(key)
+      key.destroy if destroy_possible?(key)
+    end
+
+    # overriden in EE::Keys::DestroyService
+    def destroy_possible?(key)
+      true
+    end
+  end
+end
diff --git a/spec/services/keys/destroy_service_spec.rb b/spec/services/keys/destroy_service_spec.rb
new file mode 100644
index 00000000000..28ac72ddd42
--- /dev/null
+++ b/spec/services/keys/destroy_service_spec.rb
@@ -0,0 +1,13 @@
+require 'spec_helper'
+
+describe Keys::DestroyService do
+  let(:user) { create(:user) }
+
+  subject { described_class.new(user) }
+
+  it 'destroys a key' do
+    key = create(:key)
+
+    expect { subject.execute(key) }.to change(Key, :count).by(-1)
+  end
+end