fix wrong server class includes (closes #256)

+ remove evolution server
Forward Erfurt
Fix warning, when site redirect takes place. Fix #260.
Fix #259. Write alle defined prefixes to RDFa output.
Allow configuration of session cookie parameters, such as session lifetime

Signed-off-by: Philipp Frischmuth <philipp@frischmuth24.de>
Merge branch 'develop' into feature/skyrocketingSpeed

Conflicts:
	libraries/Erfurt