Merge pull request #9 from KevinHuebner/master

Second DispatcherServlet called "admin-servlet" adapted
Merge pull request #10 from KevinHuebner/master

Set up HSQLDB, new hibernate entity, spring security authentication related to HSQLDB
Merge pull request #5 from cbos-team/master

spring security (login)
Merge pull request #11 from KevinHuebner/master

User.userName Validation error fixed
Merge pull request #12 from KevinHuebner/master

Refactoring architecture, set up user-servlet, rename home-servlet to guest-servlet
Merge pull request #13 from KevinHuebner/master

custom login.jsp created and mapped
Merge pull request #14 from dupps/master

Merge pull request #5 from cbos-team/master
Merge pull request #6 from cbos-team/master

improved some login features
customized login and menu
Merge pull request #15 from dupps/master

customized login and menu
Merge pull request #3 from cbos-team/master

customized login and menu