Introduces a basic CSV import module for bulk-importing account transactions.
Changes include:
- User can load a CSV
- User can configure the column mappings for a CSV
- Imported CSV shows invalid cells
- User can clean up their data directly in the UI
- User can see a preview of the import rows and confirm import
- Layout refactor + Import nav stepper
- System test stability improvements
* Added erblint and fixed offenses
* Added erblint bintstub. Included erblint into CI
* Merged GitHub Actions tasks for rubocop and erblint into one
* Added config for erblint.
* Reverted erblint call in the CI
* Clean up registration and session views
- There was some lingering devise logic that was hiding some text and links for sign-up and sign-in in the auth layout.
- Added a `text-link` class since I feel this is a commonly used thing that is ideal to have an applied it to all links in these views.
* Remove text-link class
