Separate the keyboard shortcuts in some config file

The keyboard shortcuts should be separated in some config file because the current ones' may interfere with the user bindings. Also, in this case we also need to handle the rendering of the shortcuts from the config file.

The issue does not name files or tests. Start by locating the current keyboard shortcut definitions and the code that renders shortcut labels, then trace how user bindings are loaded. Done means shortcuts come from a separate configuration source and the rendered shortcuts reflect that configuration without interfering with user bindings.

Written by the indexing model from the issue text.