[Sign and Submit] Prevent users from filing if they have no TIN or inactive LEIs

[billhimmelsbach]

Current behavior

• users can submit with inactive LEIs or absent TINs

Expected behavior

• users should not be able to file without these two pieces of data

Closes: #280, #281

[meissadia]

@natalia-fitzgerald @billhimmelsbach
Questions:

• "Inactive LEI": Which LEI status indicator should we rely upon for this info since there are at least two places it is specified in the response from GET /v1/institutions/{{LEI}}
  • Status code: lei_status_code and lei_status.code, i.e. "ISSUED"
  • Status name: lei_status.name i.e. "Issued"
  • Can file: lei_status.can_file i.e. true
• How should the page-level error alert fit with the existing "You have reached the final step of the beta filing process" warning?
  • Do we want to show this error on initial page load, if the errors exist (my current implementation)? Or do we only want to show this error after a user clicks Submit filing?
  • Screenshot: