Problem with shortcuts in polish language #330

For Feature Requests

Desired Feature: remove shortcut during hold right alt + s.

For Bug Reports

• BookStack Version: BookStack v0.15.0
• PHP Version: PHP 5.6.30-0+deb8u1
• MySQL Version: Ver 14.14 Distrib 5.6.30

Expected Behavior

When hold right alt and enter "s" do nothing

Actual Behavior

When hold right alt and enter "s" in polish language you can enter "ś" letter but when I try to insert "ś" in text area document bookstack "save draft". It happen only when editing document.
Look at below screenshot:
http://screenshot.sh/n9nZrlvJNsyz2

Is it possible to turn off all shortcuts ?

Regards,
Arkadiusz Zug