update sensor pis without Node

[lcommons]

Ditch node for simplicity.

• Use lighthttpd
• Update html/json pages often... Every five seconds?
• HTML page and json page
• Require HTTPS
• On Hub pi have a script to use SCP to update a config file from a gui

[lcommons]

Most issues have been resolved. FOr the future:

• require https
• manage config files from airpi.