Release Notes 0.4.1

Hydra 0.4.1

Fixes stages failing to start when there were spaces in the path
Introduces the Admin Service GUI
- Supports adding/removing stages and adding stage libraries
Adds a utility class, an abstract stage and a SimpleHttpFetchingStage for fetching data over HTTP based on fields in a document
Adds a DateFormatter, currently only supports formatting to Solr-compatible Zulu date
Adds a set of tests for runtime functionality such as stage uploads, stage startup and document processing

#316 laserval/fix-classpath Fixes issues with spaces in classpath
#312 laserval/functional-tests-db-cleanup Ensures functional tests clean up their database use
#311 andreassalomonsson/hostnameverifier SelectiveHostnameVerifier now overrides all verify methods.
#310 ebbesson/admin-service-gui Admin service gui
#309 laserval/fix-dateformatterstage-merge Fixes build failures due to PR #308
#308 laserval/leonardsaers-basic_zulu_date_formater_stage leonardsaers: Add a basic stage for converting dates to iso8601Z date (zulu date)
#305 remen/api_refactoring_squashed API rewrite
#304 laserval/fix-httputils-failing-test Fixes "socket closed" bug and failing HTTPutils test
#303 laserval/mongodb-integration-tests-separation Improvements to MongoDB integration tests
#301 laserval/readme_update Updates readme with clearer instructions for getting started
#300 andreassalomonsson/httpfetchconsumeentity HttpFetcher shouldn't consume the HttpEntity
#290 remen/keeplock Removed keepLock field and releaseDocument from RemotePipeline
#288 remen/integration_tests Rewrite of test-suite
#287 remen/travis_fixup Travis now runs "mvn verify" instead of "mvn test"