[Pharo-dev] Cleaning Phao topics

Hi I will go over Pharo topics on github and also clean and sync the file on the Pharo web site and I will clean the topics. I will make a list with the ones that are not clear with no mentors in case some people want to rescue them but this list should be much better and I will clean it with the Mooc and future lectures I will do in mind. Stef