Spreed: Show Chat even if no cam, mic is connected

[frogueat]

Steps to reproduce

1. Have no mic/cam connected to the pc
2. go to the app
3. see the message "no access to mic/cam"

Expected behaviour

Would be great if than at least the chat-functionality would work

Actual behaviour

Nothing can be done but connect a mic/cam and reload the app

Browser

Microphone available: no

Camera available: no

Operating system: mac

Browser name: Firefox

Browser version: 58

Browser log

Spreed app

Spreed app version: (see apps admin page: /index.php/settings/apps)

Custom TURN server configured: no

Custom STUN server configured: no

Server configuration

Operating system: Ubuntu 16.04

Web server: Apache

Database: PostgreSQL

PHP version:

Nextcloud Version: (see admin page)

List of activated apps:

many many

[kertase]

Would be great in deed, should be able to chat without having to share mic or webcam

[nickvergessen]

Dupliacte of #538