upnp: only delete mappings that match our port

else neighboring LAN clients delete each other's mappings

Signed-off-by: Thomas Stilwell <stilwellt@openlabs.co>
pip breaks after upgrading python package requests
Update and rename 01 Ricardian-Contracts.md to 01 Ricardian Contracts.md
Merge pull request #563 from y12studio/requests-pip-break

pip break in Docker Ubuntu 14.04  build
Merge pull request #562 from benemorius/upnp

upnp: only delete mappings that match our port
Check execute bit on textfiles.
Flake8 checks for NL at EOF.
Remove execute flag from html, md, css and txt files.
Remove execute flag from jpg files.