translation cleanup

removed translations from GlobalSecurityConfiguration and jenkins/model/Jenkins
that should only exist in GlobalSCMRetryCountConfiguration and config-retryCount
added translation based on messages from corresponding locations
corrected wrong property names
translation cleanup

removed translations from GlobalSecurityConfiguration and jenkins/model/Jenkins
that should only exist in GlobalQuietPeriodConfiguration and config-quietPeriod
added translations based on messages from corresponding locations
translation cleanup

removed translations from GlobalSecurityConfiguration and jenkins/model/Jenkins
that should only exist in GlobalCloudConfiguration
translation cleanup

purged some dislocated messages that survived my former cleanups
Merge pull request #717 from albers/translation

translation cleanup