Improve the troubleshooting instructions to install charlock_holmes
Some project (e.g. Gitaly) set the path option, which seems to force the
disable_shared_gems option. Thus it's better to set the flag globally.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Some project (e.g. Gitaly) set the path option, which seems to force the
disable_shared_gems option. Thus it's better to set the flag globally.