fixed recent workbook download issue
Revise migration script numbers
Cascade when project gets deleted
merged develop and moved upload_time to project_data
added test for get_workbook
Merge pull request #175 from StarterSquad/feature/248-3-get-workbook-doesn-t-download-most-recent-workbook

Feature/248 3 get workbook doesn t download most recent workbook
chore(also explicitly delete project_data entry when project is deleted
Merge branch 'develop' into feature/347-project-remove
disabling functionality which requires open project, when no project is open