Add disks to the get_data
Don't show Extra Costs when they have already expired
Allow expiring extra costs in the past
Hide the "created" field
Use a djngo form for the scan diff
Scan form saving logic
update changes.rst
fix api
Custom field types in the sync form
Custom fields for dict lists in the sync form
'Numeric position' field changed from required to optional.
More than one device can have 'Barcode' field set to None.
Merge pull request #599 from xor-xor/dev2

More than one device can have 'Barcode' field set to None.
Merge pull request #598 from xor-xor/dev1

'Numeric position' field changed from required to optional.
Custom form fields for dict-like fields
Merge pull request #596 from wmatyskiewicz/api

update changes.rst
Merge pull request #600 from deshipu/master

Don't show Extra Costs when they have already expired
Hide the Scan and Autoscan tabs from the UI
updated CHANGES.rst
Merge github.com:allegro/ralph