Fixed typo

German -> English

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Removed <pluginManagement />

Mixins are not yet supported in Maven so this section belongs into the
java-project parent POM.

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Added/Updated <name> and <description> elements

Now using "default" names & descriptions.

Signed-off-by: Sebastian Hoß <mail@shoss.de>