message: fix more weirdly inconsistent fullstops
diff: "Filter room members": "Filter room members",
  "Forget room": "Forget room",
  "Forgot your password?": "Forgot your password?",
  - "For security, this session has been signed out. Please sign in again": "For security, this session has been signed out. Please sign in again",
  + "For security, this session has been signed out. Please sign in again.": "For security, this session has been signed out. Please sign in again.",
  "Found a bug?": "Found a bug?",
  "%(userId)s from %(fromPowerLevel)s to %(toPowerLevel)s": "%(userId)s from %(fromPowerLevel)s to %(toPowerLevel)s",
  "Guest users can't create new rooms. Please register to create room and start a chat": "Guest users can't create new rooms. Please register to create room and start a chat",
  