issue 2667-Improve REST API URL consistency for container/containers
hawtio 1619 - allow to get the version ids needed by hawtio.
added a faq on accessing files from the java container
fix possible npe
fix up bug in overlay helper function causing unsupported exception
add a logo for influxdb
added a grafana icon
Prevent NPE in case of cleared out log. See bug on hawtio: https://github.com/hawtio/hawtio/issues/1621
Clean use of maven
  * put aether/maven in its own bundle
  * use it for agent and proxy
  * remove old modules (insight-maven, maven-util)
Delete deprecated fab
Abstract a bit more the use of the MavenResolver
Export the MavenResolver as a service, use it for the maven proxy, trim down a bit the dependencies of fabric-maven