Import working spaces CSV

As an administrator I would like to import CSVs so that I can update batches of working spaces easily

Tasks

• Add file upload interface for CSVs
• Import data from uploaded CSVs into the database

Acceptance criteria

• Administrators can upload CSVs from an admin page
• Working spaces get updated from the CSVs uploaded

changed milestone to %Sprint 3

added To Do label

assigned to @c2051413

created merge request !11 to address this issue

mentioned in merge request !11

added Doing label and removed To Do label

added Testing label and removed Doing label

unassigned @c2051413

assigned to @c2051413