Updated the session proxy article#5892

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javiereguiluz wants to merge 5 commits intosymfony:2.3from

javiereguiluz:fix_5844

Commits on Nov 17, 2015

Updated the session proxy article
javiereguiluz
committed

Commits on Mar 10, 2016

Fixed namespace typos
javiereguiluz
committed

Commits on Apr 18, 2016

Commits on May 21, 2016

Added the full XML config
javiereguiluz
committed