Removed the table uiapi.cnode_stats
Added Paolo Tormene to CONTRIBUTORS.txt
Fix README.md syntax
Merge pull request #1398 from gem/remove-cnode_stats

Removed the obsolete table uiapi.cnode_stats
Save num_sites in the job_stats table as soon as available
Small refactoring
Fixed a few unittests
specific exit value for celeryd missing nodes error and more consistent management of celery error in packager.sh
typo fixed
Fix branch var to be compliant within the new CI git plugin
Fix branch var to be compliant within the new CI git plugin
Merged with master
Merge pull request #1402 from gem/celery-check

Celery check
Comment added
Introducced a monitoring thread checking if the celery workers are up
Added CeleryNodeMonitorTestCase
Distinguished between SIGTERM and SIGABRT
Moved the CeleryNodeMonitor to its own module
Added a forgotten file to git
Restored the lost fine monitoring on the hazard getters