Merge pull request #3 from sschum/master

Spring boot and the first oauth-flow
add test dependencies
add service class that contains methods about users
use constant instead of "hardcoded" string
implements the user-view-controller
add l10n support
add cell if the name of user is null
define css-resource handler to use bootstrap as css-lib
add l10n message-properties
remove css-ignoring because it does work without this code
logincontroller now listen only for root-path (/)
spiced up user-list-view via bootstrap
add additional page elements (mocks only)
* use the latest version of maven-compiler-plugin
set scope of the embedded container to provided
fix some checkstyle violations
use annotation to define the bean name instead of using the methodname
use full names instead of abbreviations
rename some variables
add checkstyle-project-file to ignore list