Merge branch 'production'
Merge branch 'production'
update sentry in server cluster
slove conflicts in settings_production
Merge branch 'production'
Merge branch 'production'
Merge branch 'production'
Merge branch 'production'
Merge branch 'master' of https://github.com/tianweidut/ChemToolsWebService
Merge pull request #61 from tianweidut/fix-pre

Fix pre
Merge branch 'master' of https://github.com/chemistryTools/ChemToolsWebService into production
motify the new 4 models