Merge branch 'hotfix/1.2.1'
Merge branch 'release/v1.3'
return correct status code
Merge branch 'release/v1.5'
Merge branch 'release/v1.6'

Added support for prioritising leave types when making new leave requests
Ability to import users from CSV.
Merge branch 'release/v1.8'
fixed import bug
Merge branch 'hotfix/import-bug' into develop