[TYPO3-core] RFC: #9599: [felogin] Enable Caching "USER" instead of "USER_INT"

[Steffen Kamper]

Hi Dmitry,

thx for the explanation.
One thing that puzzled me either - i cleared cache of the page and 
expected that felogin is rendered new, but even then the debug i set 
wasn't executed, which leads to the question what went wrong, doesn't 
the cache was emptied while clicking "clear all caches" in BE?

vg Steffen