refs #153 - this will send email notifications only if its enabled in config/settings.yml

updated to year 2010

Merge commit 'github/master'

fixes #153 - EMail Notifications when hosts report failures

fixes #157: Audit show page might fail

refs #154 - it should return nil when we are not using authentcation

refs # 138 - add log error if unable to generate statistics
git ci app/controllers/statistics_controller.rb -m refs

fixes #150 - Summary email ignores environment selection

fixes #138 - Statistics page doesn't show any info if memory facts are unavailable

fixes #124 - Support run interval other than default 30 minutes