Include persistence.conf in WhisperBack reports
Originally created by @sajolida on #7461 (Redmine)
Having the content of persistence.conf included at the bottom WhisperBack reports would sometimes speedup user support. I know that the content persistence.conf can be inferred from /var/log/live-persist but still, it would make things easier.
Feature Branch: feature/7461-persistence.conf-in-whisperback