Misc fixes

[aptkingston]

Description

• Fix display column position being incorrect when using a DP as a table source Table using an external database with a formula column as the primaryDisplay show it on the far right instead of respecting the order of the dataview. #13827 display column is last not first in preview/published when table source is data provider #15011
• Increase width of create/edit column popover in data section to better display configuration for types like relationships
  Old (very cramped and cut off):
  
  New:
  
• Add loading spinner when uploading files. This also prevents attempting to upload additional files while an upload is in progress as I've disabled the dropzone while a file is uploading. Show a visual indicator whenever a file is uploaded via an attachment field #14974
  
• Prevent adding multiple fields to single attachment cells and fields. You can now only select one file as intended. https://linear.app/budibase/issue/BUDI-8503/can-select-multiple-attachments-for-an-attachment-single-column

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[deanhannigan]

Ran through the all the issues listed here and have some feedback

• The display column is now showing on the left as expected when a table uses a data provider. Also, the upload field changes are working perfectly 👍

• The CreateEditColumn popover change is visible when editing an existing column but not when creating a new one. Could this be extended to the create flow as well?

• When adding multiple attachments to the same single attachment field, I still see the same behaviour
  

[aptkingston]

• The CreateEditColumn popover change is visible when editing an existing column but not when creating a new one. Could this be extended to the create flow as well?

It's the same component, and it definitely is there for creating a new column... What did you click to see the small one?

Creating: 360 width

Editing: 360 width

• When adding multiple attachments to the same single attachment field, I still see the same behaviour
  

How did you add multiple? You can't select more than one file in the file picker now (unless it's a multi attachment column of course), and you can't upload a new one until you delete the current file.