v0.1.7-iptables

This is a usability improvement release.

Main changes:

• -install: Improved wording in the dialog concerning WAN interfaces.
• -install: If user manually changes autodetected subnets, do not offer further autodetection
• -manage: report_status(): better layout of the report
• -manage: report_status(); report packets statistics
• updated documentation

Full Changelog: v0.1.6.1-iptables...v0.1.7-iptables