Update access labels

[thostetler]

Update the access labels to use 'paid' and 'open'

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.7%. Comparing base (98583b3) to head (f20972b).

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #804     +/-   ##
========================================
- Coverage    61.7%   61.7%   -0.0%     
========================================
  Files         313     313             
  Lines       36092   36092             
  Branches     1600    1600             
========================================
- Hits        22237   22235      -2     
- Misses      13818   13820      +2     
  Partials       37      37             

Files with missing lines	Coverage Δ
...components/AbstractSources/AbstractSourceItems.tsx	82.9% <100.0%> (ø)
src/components/AbstractSources/accessLabel.ts	100.0% <100.0%> (ø)

... and 1 file with indirect coverage changes

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