Added info page to web frontend
SimpleHttpServer.java:
-added handler to send back last 30 lines of log
-added handler for info.html
-fixed html generated by settings handler, now validates (still need to test other pages)

info.html:
-page to show current status of service (running drivers, uptime, known remote modules, log file)

template.html:
-removed the driver list from template, list of drivers available in info.html

main.js:
-fixed a few bugs
-added method to update log area