Feature: Force landscape orientation

[McLaynV]

Add configuration to force landscape orientation for the app.
This would add a lot of comfort for people without screen auto-rotation.

[zegkljan]

A number of recent Android versions allow to flip the orientation to landscape even if auto-rotation is disabled. It makes no sense to me to implement something the system already provides. In any case, where should such option be presented and how?

[McLaynV]

The Android-provided flipping to landscape works as long as I stay in the app. When I leave the app and return, I have to flip again.

The minimal solution I can imagine is a checkbox in the configuration for "force landscape". More general would be a drop-down with "force landscape", "force portrait" and "follow system rotation".