[build] change finalname to include leipzig.

Helps to distinguish this specific build from the generic one.
[build] use new artifactid for leipzig specific examserver build
Merge branch 'master' into uni_leipzig
Revert "[revert] removed moodle import feature, lives on in a separate branch (see uni_leipzig)."

This reverts commit 2026040e484db8c164c9c00d5e1790d2fd747b6c.
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig

Conflicts:
	examServer/pom.xml
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig
Merge branch 'master' into uni_leipzig
[doc] include CEWolf depencendy to README
[internal] use OSGi declarative services, provide implementations for java.util.Serviceloader