ModuleSearchBase has wrong modified date

[MaiklT]

Describe the bug

All items have the modified date of the last indexing operation.

Expected behavior

Modified date should be the date of the last change of the item.

Additional context

Querying the newest items from the search base returns always a lot of FAQ items on the top, and the "real" newest items are listed much more "down the list".

The problem is obviously line 360 in the business controller class:

ModifiedTimeUtc = DateTime.Now.ToUniversalTime()

This should be the modified date/time of the FAQ item.