Track intresting information

[RealA10N]

We can analyze the websites that the user visits, what problems he spends most of his time on, and what language he prefers!
This information can be interesting and in my opinion, gives cptk some extra points when compared to other competitive programming toolkits.
Although it sounds good, this feature may be too much for the simpler users, and we might want to consider adding it as an extra and optional dependency.