More lenient manual checkout timing

[lilioid]

The problem

I frequently use travelynx to check in and out of Nahverkehr like U- and S-Bahns in Hamburg. Those are not always punctual to the minute and might even arrive a bit early to a station. In the situatuons where I transfer to a different line, I'm often standing on the platform, waiting for travelynx to show the checkout button so I can then check in to the next train that I'm planning to take. Usually this doesn't take very long but it is still a bit annoying to either wait until travelynx realizes the train has arrived or to scroll down (a potentially long way) to check out without real time data.

Proposed Solution

The checkout button should be visible a bit earlier (a minute would be enough for my usecase).

It should behave the same as the normal checkout button and the goal of this change would only be to improve usability.