frontend: JSON documents: always use "fieldsByName" instead of "fields"

[teosarca]

Type of issue

Feature request

Expected behavior

We changed following API responses:

• getting a single document data
• getting view data
• responses to document PATCHing

In all those cases we are now providing "fieldsByName" which is a map of fields indexed by their field name.
Atm we are still providing the old "fields" property, but it's deprecated. Please make sure you are not using it.

Backend task: metasfresh/metasfresh-webui-api-legacy#405

[damianprzygodzki]

Process parameters left not changed. It is also needed, because Processes use the same Window component as other entities.

"parameters":[{"field":"AD_Image_ID",...

They should be also fieldsByName.

[metas-mk]

Checked. Cannot be tested at, w/o taking out the "fields" property from the backend. waiting for that.

[teosarca]

Note to IT: now this one is testable
Pls check/test on regular document, Process params, ASI and location

[metas-mk]

Tested. Checked
a) "Fields" property is not exiting anymore: OK
c) New and existing Sales Oder: OK
d) New and existing ASI in Sales Order Line: OK
e) New and existing Location: OK

Done. Closing.