Keyboard shortcuts

Hi, this one is about keyboard customization.

Ctrl+Shift+0: Toggle sidebar is not working on a Windows laptop. Heavily missed due to the permanent need to maximize screen real estate and therefore toggling the sidebars all day long.
In Zettlr 4.1.1 I ran into an unintended R-T-L writing mode by mistyping a shortcut. Maybe it is a beta feature that made it into a release. But please, document it on the documentation website. It took a while to get rid of R-T-L again.

Make toggling between Preview Mode and Code View a keyboard shortcut, not only a button in the status bar. With Zettlr's nifty Snippets system at hand, who wants to use anything but the keyboard? ;-)
Enable editing of keyboard shortcuts by the user. Different working contexts make for different mnemo-systems.
The status bar is a severe candidate for toggling, preferably with a keyboard shortcut. (Small laptop screen… you remember?)
The functionality of the four tabs in the right-hand-side sidebar is a godsend. Please make them each accessible with keyboard shortcuts. They should also be scrollable with the keyboard, for example, through a long content list. This would probably require some kind of switching the focus between editors and the sidebar.
Switching between tabs is limited to single editors. Please enable switching between split views as well with a shortcut.

Thanks for your patience and support!