To pedro42: This is more or less what AGTL does. Then it reads the HTML page and puts the found geocaches into the database. But as the HTML coding changed, AGTL needs to be changed as well. My contribution was meant as a temporary work-around, but I could not finish it.
To bullrin: I cannot get changes in cachedownloader.py to work in AGTL. Only when downloaded as an update from within AGTL. I think this newest version from github was never officially released. You may check earlier discussions on page 28 of this thread.