In MDL-79285 we introduced the ability of "reducing" xhprof run data in order to be able to show graphs properly. Since then, table data is still shown "complete" for table results but "reduced" for graphs.

At the same time, a new parameter ("reducedata") was created, allowing to change those defaults if specified by setting "&reducedata=[0|1] in the URL. It's working ok, so far.

This issue is about to enable that parameter to be used from the UI, so:

• Together to the current "View profiling details" in admin/tool/profiling/index.php a new "View REDUCED" option (text to decide) is added.
• Same for profiling comparisons.
• Bonus: Let's improve that page, it used to be nicer, now it's not.