Merge branch '301-297-has-not-been-merged-to-master-cpu-100' into 'master'

Resolve "#297 has not been merged to master (CPU 100%)" (!326)

Closes #301

* fix: crash during tests

* Resolve "Duniter is using 100% of one CPU core" (!322)

* fix(#297): duniter-endpoints task was using 100% of one CPU core