Domains.py: Extraction only from dns answers

- Refined extraction to couple domain with their resolution

- Refined wwwExtract to only obtain responses with IP
Domains.py: host and dns servers properties

Local.py: Local host information extractor
User[Dir]: Added user directory. it supports user interaction
[IOManager, Pcap]: fixing bugs and handling errors
[User]: Bringing user interperter to live
modules.py: fixing help text indentation
Merge branch 'python'