Cretate delete project confirm dialog

frontend/messages/en.json

@@ -72,8 +72,8 @@
     "update": "Update",
     "please_enter": "Please enter project name",
     "no_projects_found": "No projects found",
-    "you_need_signed_in": "You need signed in",
-    "sign_in": "Sign in"
+    "are_you_sure": "Are you sure you want to delete the project?",
+    "delete": "Delete"
   },
   "Project": {
     "home": "Home",

frontend/messages/ja.json

@@ -71,8 +71,8 @@
     "update": "更新",
     "please_enter": "プロジェクト名を入力してください",
     "no_projects_found": "プロジェクトがありません",
-    "you_need_signed_in": "サインインが必要です",
-    "sign_in": "サインイン"
+    "are_you_sure": "プロジェクトを削除してもよろしいですか?",
+    "delete": "削除"
   },
   "Project": {
     "home": "ホーム",