OAuth redirection to frontend process/credentials

Fixes frontend#413 (closed)

Codecov Report

Merging #1008 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1008   +/-   ##
=======================================
  Coverage   88.10%   88.10%           
=======================================
  Files         230      230           
  Lines       15206    15206           
=======================================
  Hits        13397    13397           
  Misses       1809     1809           

Impacted Files	Coverage Δ
arkindex/project/urls.py	73.33% <ø> (ø)

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merged

mentioned in commit c5813c9a