[new] Bridges for DTC, SDZ and DDG

New bridges for DTC, OpenClassrooms (the new SDZ) and DuckDuckGo.

The bridge for DTC returns the latest quotes.
The bridge for SDZ returns the latest tutorials, for the info or the sciences section. (needs improvement in design/usuability)
The bridge for DDG returns the latest search results, sorted by date.
The bridge for SCMB didn't work correctly on my server, so I deleted some informations.