Remove obsolete log-config
Change return value of render methods to Object.

With Object as return value, also tec-specific query-objects may be used.
Change return value of render methods to Object.

With Object as return value, also tec-specific query-objects may be used.
Change return value of render methods to Object.

With Object as return value, also tec-specific query-objects may be used.
Add logback config files.
Remove obsolete classes.
Add ElasticSearch.
Rename NullObjectValuesProvider to EmptyValuesProvider
Simplify search api.
Remove unused warning suppression.
Synchronize file name.
Synchronize file name.
Synchronize file name.
Remove obsolete class.
Use a web context aware WebContextProvider.
Use a default search for each endpoint.
Travis CI: enable notification webhook
Travis does not support encrypted webhooks urls
Travis + Gitter: repo room
Travis + Gitter: ALWAYS for testing!