[BUG] cant use special characters

Description:

Server Setup Information:

• Version of Rocket.Chat Server: 0.63.1
• Operating System: ubuntu 1710
• Deployment Method(snap/docker/tar/etc): snao
• Number of Running Instances: 1
• DB Replicaset Oplog: idk
• Node Version: latest
• mongoDB Version: latest

Steps to Reproduce:

1. enable special characters in layout
2. edit name to "Hjälp"
3. save

Expected behavior:

it will let me save the new name

Actual behavior:

error shows up
#10469
"%s är inte ett giltigt rumsnamn"

Relevant logs:

I20180417-02:18:19.538(0) ➔ | Rocket.Chat Version: 0.63.1 |
I20180417-02:18:19.539(0) ➔ | NodeJS Version: 8.9.4 - x64 |
I20180417-02:18:19.539(0) ➔ | Platform: linux |
I20180417-02:18:19.540(0) ➔ | Process Port: 3000 |
I20180417-02:18:19.540(0) ➔ | Site URL: http://gridux.se:3000 |
I20180417-02:18:19.541(0) ➔ | ReplicaSet OpLog: Enabled |
I20180417-02:18:19.541(0) ➔ | Commit Hash: ac16e93869 |
I20180417-02:18:19.542(0) ➔ | Commit Branch: HEAD |
I20180417-02:18:19.542(0) ➔ |

Start by reproducing the reported steps with special characters enabled, using the example room name "Hjälp" and reviewing the related error reference #10469. Trace the room-name validation involved in saving the layout name; done means the name saves successfully without the reported invalid-room-name error.