message: nightfall && weekly heroic -> activities
diff: "WotM": "Wrath of the Machine",
  "AF": "Archon's Forge",
  "Dawning": "The Dawning",
  - "AoT": "Age of Triumph",
  - "Nightfall": "Nightfall Strike",
  - "WeeklyHeroic": "Weekly Heroic Strike"
  + "AoT": "Age of Triumph"
  }
  },
  "Header": {
  "Activities": {
  "Activities": "Activities",
  "Normal": "Normal",
  - "Hard": "Hard"
  + "Hard": "Hard",
  + "Nightfall": "Nightfall Strike",
  + "WeeklyHeroic": "Weekly Heroic Strike"
  },
  "RecordBooks": {
  "RecordBooks": "Record Books",
  