Fix merged.

Thank a lot for your help. Very sorry for the delay.

It should be noted that merging this fix will not update users emonhub.conf even if they update emonhub. It will only update the default emonhub.conf. If emonpi users have not made any custom changes to their emonhub.conf they can pull in this fix and to overwrite their current emonhub.conf by doing:

cd emonhub
git pull
cp emonhub.conf ~/data/emonhub.conf

Or just manually rename sendinterval= 30 to interval=30 in the [[emoncmsorg]] section of emonhub.conf.