Add "external freeshop checkout" roles to seed

[pylipp]

• Update staging Auth0 role IDs
• Update usergroups and roles in init.sql
• Remove staging roles not present in seed

[pylipp]

Add External Checkout to Staging/Demo (ensure all roles that exist in production are replicated in Staging/Demo) #tiny

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.85%. Comparing base (52e1022) to head (fe0d834).
Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1536   +/-   ##
=======================================
  Coverage   85.85%   85.85%           
=======================================
  Files         229      229           
  Lines       21709    21709           
  Branches     1927     1927           
=======================================
  Hits        18639    18639           
  Misses       3034     3034           
  Partials       36       36           

Flag	Coverage Δ
backend	99.07% <ø> (ø)
frontend	82.68% <ø> (ø)

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[pylipp]

The new role shows up when creating a new user in dropapp staging