Description:
When editing a message in a Thread, while message editing history is enabled, the message duplicates when you re-enter the thread.
Steps to reproduce:
Make sure "Keep Per Message Editing History" is set to true.

- Right-click on a message and click "Reply in thread"
- Send a message
- Edit the message
- Close the thread
- go about your day....
- Come back to the thread later and notice your message is showing up twice.
Expected behavior:
Only show the message once.
Actual behavior:
The message shows up twice.


Server Setup Information:
- Version of Rocket.Chat Server: 1.0.1 (4a3e631)
- Operating System: CentOS 7
- Deployment Method: tar.gz
- Number of Running Instances: 4
- DB Replicaset Oplog: Yes
- NodeJS Version: v8.9.3
- MongoDB Version: 3.2.22 (wiredTiger)