Description:

Steps to reproduce:

1. Go to 'Prune Messages'

Expected behavior:

Here's how the message about deleting messages in the English interface looks.

Actual behavior:

Here's how the message about deleting messages in the Russian interface looks.
He is not!

Server Setup Information:

• Version of Rocket.Chat Server: 0.69.0
• Operating System: Ubuntu 16.04.5 LTS
• Deployment Method: snap
• Number of Running Instances: 1
• DB Replicaset Oplog: Enabled
• NodeJS Version: v8.11.3

Additional context

Also there is no processing of keys in the Russian translation:
"Prune_Warning_before": "This will delete all %s in %s before %s.",
"Prune_Warning_after": "This will delete all %s in %s after %s.",
"Prune_Warning_between": "This will delete all %s in %s between %s and %s.",