Recently changed objects reloading every second

[DavidMStraub]

Under certain conditions, the recently changed object component reloads every second because getUrl returns a different value. This could happen with the new app state handling e.g. if a background task status is being fetched at intervals.

The fix should be easy: round the timestamp (which is only used to restrict the search results to the last year to something big (e.g. 100k seconds).