This Fixes #4820 and #4786
This combine patch includes:

- send the last time when data was uploaded
- send the error message if data could not be uploaded, otherwise sends 'ok'
- warning if a disk partition is above 85% full
- warning if couch process are maxed out (25 or above)

The thresholds for diskUse and couchProcess are set in the config file
Both alarms are sent only if the thresholds are overpassed