Add lazy loading, skeleton loading or something similar to avoid displaying 'unknown' for stations on details view

[bambooch]

The screenshot below is what happens for a split second when clicking on 'Pogledaj detaljnije' (opens up the route detailed view)

Bug found by Coma

[bambooch]

Implementation idea:

https://www.freecodecamp.org/news/how-to-build-skeleton-screens-using-css-for-better-user-experience/