something old
merge two versions of master
Merge branch 'master' of github.com:blastmaster/BeerPlusPlus

Conflicts:
	lib/BeerPlusPlus.pm
improved beer++ application and added CSS

* added denied-page and show it when authentication fails
* improved statistics-page by showing statistics of all users
* added logout-page and choose randomly byebye-slogan
* added basic-layout and adjusted all pages
* some little improvements, e.g. argument checking, error messages etc.