Change handle and url of contact person for Indigenous client

See merge request !3082

Use libmagic via majic

Closes #1736

See merge request !2534

Change user.locked field to user.is_locked

See merge request !3077

Move Consistency.FileLocation to ./test

See merge request !3079

This fixes a compilation fail because of Credo's absence in MIX_ENV=prod

Feature/1822 files consistency

Closes #1822

See merge request !2680