Add rscores pool command.
Add stratum into monitoring infastructure.
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# Committer: Martin von Löwis <martin@v.loewis.de>
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#	modified:   lib/NP/Model.pm
#	modified:   lib/NTPPool/Control/Monitor.pm
#	modified:   monitor
#	modified:   pool
#	modified:   sql/ntppool.update
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#	docs/ntppool/static/.static.versions.json
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