add ZipReader class + location change on stat. FS
added ZipReader integration (no aggregation yet)
added ZipSupport in Aggregation (1 unfixed bug)

bug description: Files.getDistributions() returns mysterious
distributions that arent really present
bug fixes in ZipSupport in Aggregation (1bug lft)

- Files.getDistributions() doesn't work for ZipFiles, need to write
working method
fixed Files.getDistributions bug, aggr. works