add option to disable keybindings fixing #1251

[MayNiklas]

This would fix #1251
The keybindings conflict with important characters on Mac keyboards.
Currently for example {} always get replaced with ´©{¥}`, especially problematic in workflows using barcode scanners.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 54.76%. Comparing base (70cde4c) to head (ac00e33).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1254      +/-   ##
============================================
- Coverage     54.77%   54.76%   -0.01%     
  Complexity     8012     8012              
============================================
  Files           601      601              
  Lines         25690    25690              
============================================
- Hits          14072    14070       -2     
- Misses        11618    11620       +2     

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