implement support more than one censoring variables
Merge branch 'survival_analysis_acgh_dev' of https://github.com/thehyve/Rmodules into survival_analysis_acgh_dev
add tab to enable user view his jobs with their statuses and enable to run in the background so that user can proceed with other processes.
Merge remote branch 'origin/survival_analysis_acgh_dev' into survival_analysis_acgh_dev