Updated: Devices CMD page - ajax check every 2 seconds to see if a value changed on server (checking lastchanged), if yes table is refresh via ajax/json
comparing dates is made on browser side to play with jquery a bit and datatable callback function
Fixed pagination in datatable (was missing some devices).
Perhaps will try to find another way to check the last date because it is still too slow for me (70ms to 95ms on a low power sheevaplug), on my homemade website to control my house its less than 10ms....