Improvements to the data policy checks

[bassosimone]

I agree to the data policy, which includes retention and publication of IP addresses.

@mattmathis suggests to add "[...], but no other personal data"

[robertodauria]

@sermpezis Any thoughts? I think we should either implement this change or close this issue before it can legally drive a car. :)

[Kayd-06]

Hi, I would like to work on this issue. I will review and propose an approach.

[bassosimone]

@Kayd-06 I think it's not advisable. This change has nothing to do with code changes and it is a policy matter that needs to be discussed among us in the @m-lab team. Thank you for your understanding.