Method setRole

app/models/User.js:376–383

(role, force = false)

    }

    setRole (role, force = false) {
      const oldRole = this.get('role')
      if ((oldRole === role) || (oldRole && !force)) { return }
      this.set('role', role)
      this.patch()
      application.tracker.identify()
      return this.get('role')
    }

    // y = a * ln(1/b * (x + c)) + 1
    static levelFromExp (xp) {