Merge pull request #53 from HackerPartie/manu_branch

Manu branch
Merge pull request #54 from HackerPartie/manu_branch

Manu branch
add multi model management
Merge pull request #55 from HackerPartie/manu_branch

add google analytics tracker
Merge branch 'master' into multimodel_sentence
Merge pull request #56 from HackerPartie/multimodel_sentence

Multimodel sentence