Idea Summary
At the end of the Data loading from the APEX interface, it shows a message: "Data in Table {Table Name} appended with 1000 new records. 
Add the Name of the file that was loaded, and the time it took to load.
 

Use Case
If I have to add a lot of small files, sometimes it's impossible to know what was just loaded. (A phone call gets in the middle, and you lose track of which file you were loading…)

Preferred Solution (Optional)
While it loads, show the Origin file, the target table, the  browser time it started loading, the number of records loaded so far, the elapsed time, and the speed at which it is loading as records/sec