Feature/log

This feature allows to :

   Log action of haibu like that :
![haibu_log](https://f.cloud.github.com/assets/2659119/344592/0e0f874c-9e05-11e2-853f-cdc837a504e6.jpg)

   And log application directories and permission if it is necessary (if useraccounts plugin is used) when haibu start :
![start_haibu](https://f.cloud.github.com/assets/2659119/344594/29351136-9e05-11e2-9c96-e751b4e4f459.jpg)