Project member management

frontend/messages/en.json

@@ -267,6 +267,8 @@
     "manager": "Manager",
     "developer": "Developer",
     "reporter": "Reporter",
+    "delete": "Delete",
+    "deleteMember": "Delete member",
     "no_members_found": "No members found",
     "add_member": "Add member",
     "user_name_or_email": "User name or email",

frontend/messages/ja.json

@@ -266,6 +266,8 @@
     "manager": "管理者",
     "developer": "開発者",
     "reporter": "報告者",
+    "delete": "削除",
+    "deleteMember": "メンバーの削除",
     "no_members_found": "メンバーがいません",
     "add_member": "メンバーの追加",
     "user_name_or_email": "ユーザー名またはメールアドレス",