macOS preferences hotkey

[skulblakka]

Checklist

• This is a bug report.
• This is a feature request.
• I understand the difference between Streamlink and Streamlink Twitch GUI.
• I tried solving my issue by reading the project's wiki first.
• I have read the contribution guidelines und used the search function to find already existing threads.

Description

Instead of using the usual "command+," hotkey for preferences the program uses just ",". Not only does this go against the common hotkey used for preferences on mac os but also causes issues when entering a comma into a text field on the GUI.

Expected / Actual behavior

I think the GUI should use the usual "command+," hotkey for preferences

Environment details

Operating system and version: macOS Sierra
Streamlink Twitch GUI version: 1.3.1 (installed via homebrew)

[bastimeyer]

Thanks for the report!