issue #530 - New Fitszilla versione 1.21 online. The subscan offsets related keywords added to the primary header.
issue #556 - Added API to send emails to local system administrators. This feature is now exploted when a servo system oscillation is detected at Noto and Medicina
## Fixed
issue #518 - In case of communication error we set a dummy value (100000) for the temperature properties, and the related timestamp keeps the value of the last communication timestamp.
issue #525 - When in LOCAL mode the receivers can turn on/off the noise mark and LNAs. There is no more MNG_FAILURE logging in case of LOCAL mode: only the LOCAL/REMOTE status (during component activation) and the change of status (LOCAL to REMOTE and viceversa) are written to the logfile.