Reformatted multiple logger calls to use logback's string formatter
instead of string.format. Also changed several errors to warnings.
Changed one System.out to a logger.error()
Revert "Changed the naming scheme for the sac files in Synthetic compare metric"

This reverts commit cbc1edba72a7f45028aca48c9d8ef328c88e173e.
Fixing comment in Event Synthetics
First pass on javadoc comments in evencomparesynthetic
Cleaned up unused code, documented the event synthetic compare metric.