Merge pull request #20 from dupps/master

CBOS-21
Model, DAO and service layer for Module created
Architecture for model, DAO and service layer for content created
Model, DAO and service layer for module and content, classdiagramm
Merge pull request #21 from KevinHuebner/master

Model, DAO and service layer added for module and content, classdiagramm updated
Merge pull request #8 from cbos-team/master

Merge module stuff