refs 6656 use less_than_or_equal_to instead of less_than to search user
refs 6655 not display order link without root_manifestation
modified Order and Payment
Merge branch 'master' of https://github.com/MiraitSystems/enju_trunk
delete duplicated system_configuration
refs 6650 manifestaton_idとpositionに対する索引を作成した。
Merge branch 'master' of https://github.com/MiraitSystems/enju_trunk
refs 6250, 6580 get approval reports
Merge branch 'master' of https://github.com/MiraitSystems/enju_trunk
refs 6046 発注、支払修正
refs 6046 masterをマージ
Merge remote-tracking branch 'origin/master' into issue6046

Conflicts:
	app/controllers/orders_controller.rb
	app/controllers/payments_controller.rb
	app/models/order.rb
	app/models/payment.rb
	app/views/orders/show.html.erb
	app/views/payments/index.html.erb
	config/locales/translation_en.yml
	config/locales/translation_ja.yml