Redesigned form layout

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Description

https://www.figma.com/file/NJiSfMKCPMJZIduAYVq0he/SD-vs-2?node-id=0%3A1 specifies a new form layout
to which we need to add ... with possibility to delete form and add XML

We also need buttons for Save and Validate (validate will send to backend for validation and will make the object ready in #538

clear form is not required - but maybe we should not delete it as functionality as still need to be tested

• Implement design for XML upload #787

DoD (Definition of Done)

redesigned form layout

Testing

Unit and integration testing.