Reduce bundlesize by picking parts of fontawesome and d3
Add mixings for subscribing components

* extract InfoUpdater from StatusUpdater
* rename ApplicationJournal to ClientApplicationEventStore
* ClientApplicationEventStore now implements reactor's Publisher
* Reworked AdminApplicationTest to be more sophisticated.

The Spring team discourages the use of the `spring.*` configuration
namespace, hence I use the major update and move all properties. With
this commit all client related properties are moved to `sbadmin.client`.

As now with spring boot 1.4 there is a special goal for generating the build-
information, we use it for displaying the version in spring boot admin. The old
info.version property still works but is deprecated. From now on
build.info.version is taken into account.

Streamline the Hazelcast support with boot 1.3 and support storing events in hazelcast

closes #113

remove logfileEndpoint
rename logback.xml to logback-spring.xml in samples

fixes #98