diff -r 76ab3c71aff2 -r c67bcee93248 doc/book/en/images/request_session.svg
--- a/doc/book/en/images/request_session.svg	Mon Jul 06 17:39:35 2015 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,206 +0,0 @@
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