Add dataset route for RPB
Cache search results for one hour, remove modules from config
Add serve JSON-LD when requesting a dataset

* add dataset routes NWbib and RPB
Merge branch 'master' into issue-422-config-play
Use asynchronous results in Api, Application, and Path controllers

Add play-test dependency to make Helpers available in production
Add lobid persons routes

* refactor a bit
Simplify the elasticsearch requests due to a comment by @fsteeg
Merge pull request #425 from lobid/issue-422-config-play

Issue #422: config play for dataset descriptions and persons
Remove conflicting libs in ~/.m2/repository for Travis build
Merge pull request #426 from lobid/cache

Async results and caching
Merge branch 'master' into favicon