* fix(retry strategy): handle cases were localStorage fails after success (#474)

    Before this commit we only checked for localStorage failures at:
    - page load
    - localStorage.setItem

    While in some situations websites could erase localStorage for the
    whole page at any moment (between requests) and we were not resilient to that.

  * chore(forwardToSlave): deprecate forwardToSlaves in favour or forwardToReplicas