pkp/pkp-lib/issues/6201 Adapt to support OMP#79

Draft

NateWr wants to merge 6 commits intopkp:stable-3_3_0from

UB-Heidelberg:stable-3_3_0

Commits on May 31, 2021

Commits on Jun 2, 2021

Add select a role for author, editor and translator to settings and reformat code
nongenti
committed

Commits on Jun 7, 2021

Add select a role for chapter author to settings
nongenti
committed

Commits on Jun 9, 2021

Reformat code, change wording and add select multiple user groups for roles.
nongenti
committed