Description:

Steps to reproduce:

1. Go to Settings -> General -> UTF8 -> UTF8 Names Validation
2. Set it to something without uppercase letters: [0-9a-z-_.]+
3. Try to start discussions.

Expected behavior:

Discussion is started

Actual behavior:

Error: __room_name__ is not a valid room name

Server Setup Information:

• Version of Rocket.Chat Server: 1.0.2