Akhq.py

Fix a file descriptor leaks (43) due to consumer needs to be explicit close

Thanks eskp for report

Just fix the side menu acl

Default role, Basic Auth and role per user.
Also allow to have a read only instance of KafkaHQ


- Security : Auth & Roles
- Fixed a bug in the dataBody when messages value are null. (36) zthulj
- Update dependencies
- reintroduce KAFKAHQ_CONFIGURATION for docker

Mostly on maintenance release

* Fix performance issue (remove unnecessary synchronized on micronaut)
* Add a proper 404 & 500 error page
* Add a [pretty error page](https://github.com/jstumpp/uups) for dev
* Add an access log
* Fix escape on data page [34]
* Fix search for avro based records

Fix travis build 31

Mostly a technical release, I move the whole application to micronaut !

Also :
* add configuration options to size and sort order [28]
* update README.md with all the configuration available.
* improve development environnement thanks to micronaut (works both in docker or with gradle)
* fix some sse bug on search topic data
* update to last gradle version

:warning: The configuration file have changed in order to match Micronaut requirement :warning: