Ticket 47538 - Fix repl-monitor color and lag times
Bug Description: Colors do not match the legend, and when the supplier or
consumer max csns are not available, the lag time is displayed
Fix Description: The color hash table needed to be sorted before processing,
and we were not properly detecting the "Unavailable" state of
a replica which lead to the odd lag times. Also added the
string "Unavailable" for uninitialized values which allowed
for a cleaner report when replicas are offline.
Updated the man page as well.
Reviewed by: nhosoi(Thanks!)
(cherry picked from commit 34c929353280b93eebe214f1c21f5b788aff1c39)