updated swagger-ui
api key form on top
fix for swagger-ui bug turning api_key header into Api_key
renamed api to API
fix for requesting api keys for the same owner twice
Merge branch 'feature/postgre' into feature/server-0.2.0

Conflicts:
	2-repositories/scala-repo-server/src/main/scala/com.snowplowanalytics.iglu.server/model/ApiKey.scala
	2-repositories/scala-repo-server/src/test/scala/com.snowplowanalytics.iglu.server/service/ApiKeyGenServiceSpec.scala