Start implementing payment bulk destroy
Implement bulk destroy function in payments.
Start separationg event edit page
Merge pull request #17 from TheBigBoss2005/payment-bulk-destroy

Implementing payment bulk destroy
Finished separating event edit event page
Merge pull request #19 from TheBigBoss2005/separate-event-edit-page

イベント編集ページ(/events/:event_id/edit)のうち、支払情報登録機能を支払情報登録ページ(/events/:event_id/items/new)に移動
Integrate Japanese title and breadcrumbs
Merge from master.