Merge pull request #7 from 52North/develop

sync with main line
add regional language support
Merge pull request #8 from janschulte/develop

merge API example and prerendering funcitonality
update documentation after discussing open points
merged
merged
Merge branch 'master' of ssh://github.com/ridoo/SensorWebClient
cleanup dependency
remove exception page (managed via Spring now)
cleanup version
add generalization
cosmetics
Merge pull request #9 from janschulte/develop

merge prerendering sophistications
close and flush streams in rendering task
add generalized timeseries values to collection
Merge pull request #53 from ridoo/master

prerendering && generalization
merged