Lime revocation and relinking improvements

[rgalanakis]

Vendor account link: require balance payoff

We were requiring a payment instrument, but NOT requiring
the account to be paid up before re-linking.

This prevents relinking unless the user is paid up.

It also guards against relinking if services are prohibited.

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Add link to provision member contact to vendor account page

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Standardize field displays on resource detail page

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AnonProxy: handle messages when ineligible

We need to handle relay messages even if the user is no longer
eligible for a service; the individual message handlers
can figure out what to do from there.

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Allow admins to retry revoking Lime account

We cannot assume the email was sent/processed.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.82%. Comparing base (4837ef4) to head (b8e40ad).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #927   +/-   ##
=======================================
  Coverage   99.82%   99.82%           
=======================================
  Files         750      750           
  Lines       37226    37253   +27     
=======================================
+ Hits        37162    37189   +27     
  Misses         64       64           

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