BETYdb 5.4.0

Added

• configuration to sync forks of BETY using https://github.com/wei/pull
• configuration to set root_url

Fixes

• Fixes to the docker build to fit in kubernetes helm chart.
• Added Wisconsin back to database dump workflow
• Catch exception when load.bety fails and cleans up /tmp folder
• Fix problem with sendmail causing error on new user sign up #677

Changed

• #705 : More clearly indicate method is optional in bulk upload
• updated rails to 5.2.4.6
• removed static route, it was only used to render 404.
• allow n=1 in bulk upload #704