- Added eZ LS Debug information on Symfony2 toolbar

First implementation of eZ LS Debug toolbar on SF2 toolbar
-> next step add a profiler page
![Capture d e cran 2012-12-14 a 15 46 36](https://f.cloud.github.com/assets/329691/13380/1a8bf344-45fd-11e2-834e-c72c124748c6.png)