* [SC] Sync the entire DataHives codebase to be in line with the PGC. Main chanes:
  ** Debug/load/run files; integration in PraSem (as Git submodule).
  ** Integration in Web UI.
  ** Use of DCG-based HTML and text generation.
Moving towards a functional DataHives project...

* [DEB] Removed data.
* [SC] Various fixes to make the Web UI not break anymore.
* [DH_TEST,EXT] Adding an all new agant crawler.
* [DH_TRAVERSAL,SC] Simplified code by reusing LIST_EXT.