[HttpKernel] fixed internal subrequests having an if-modified-since-header#19290

Closed

MalteWunsch wants to merge 2 commits intosymfony:2.7from

MalteWunsch:fix-subrequest-if-modified-since

Commits on Jul 5, 2016

[HttpKernel] fixed internal subrequests having an if-modified-since-header
MalteWunsch
committed
Also remove If-None-Match-Header from subreqest
MalteWunsch
committed