[TASK] Follow redirect to get external URI response code

If an external URI return a 300 status code it's not a useful information
for the content inventory. Knowing the this 300 point to a 404 is more
intersting.
[TASK] Refix mispelled methods ...

Sorry broken merge
Merge pull request #6 from ttreeagency/feature/FollowRedirectForExternalURL

[TASK] Follow redirect to get external URI response code