Some patches for play 2.1.3

Hello @mgonto, 

Thank you for your video. I will made some update to use the last sbt (0.12.2) and Play Framework (2.1.3).

I'm not able to find the logger-mod dependency, so my choice has been to remove it. I hope not broke your work. :/
I guess @LogRequest is an annotation which works with logger-mod so same punishment.

Your example was very interesting to understand how works play. :+1: 

Sincerly,

Benoît