fix Anti-Feature parsing
I met up with @NicoAlt and his friend whose name I unfortunately forgot at 35c3 to finish up the Anti-Feature support for the website. This is one key fix that we found. I also updated the test index file to the most recent index from f-droid.org and added tests to ensure that both app and package antiFeatures are properly parsed.
Edited by Hans-Christoph Steiner