Cookbook for session concurrency control#4440

Closed

ajgarlag wants to merge 4 commits intosymfony:masterfrom

ajgarlag:feature/session-concurrency

Commits on Nov 10, 2014

Commits on Nov 11, 2014

Changes suggested by @javiereguiluz.
ajgarlag
committed
Adds references to the new cookbook article in cookbok map and cookbook security index.
ajgarlag
committed