fixes #780

Using spring.boot.admin.ui.title/spring.boot.admin.ui.brand you can
customise the page title and logo/title shown in the navbar

closes #212

Force the connections in wiremock tests to be closed.
See https://github.com/tomakehurst/wiremock/issues/485

As Spring Boot 1.4.x and older doesn't use the vendor content-type for
the actuator endpoints, we also need to consider application/json
responses for the legacy conversion

fixes #749

The to/from statuses were previously inverted.
Test message contents in tests for MicrosoftTeamsNotifier.doNotify().

Setting a loglevel for logger names with spaces currently fails because
the servlet.InstanceProxyController messes with the encoding. With this
commit the path is correctly encoded before being forwarded.

fixes #755

fixes #753

In order to do a relaease not waiting for Spring Cloud
Finchley.REALEASE move all depedent stuff into a seperate module which
can be excluded during build

Fixes stalls in threaddump view due to not completing responses - only
reactive applications were affected so far.

If the build version of the instance is present in the metadata it's now
also considered and the version is now a attribute on the instance
itself. So when using non-boot application they can provide it via the
registration metadata.

- use MimeMessage with Content-Type text/hmtl
- use a single template for subject and body
- use a Spring aware TemplateResolver

The WebClient's responses should be always consumed, so that underlying
buffers are released.

Fixes #666

This commit enables client and server to work out of the box on
CloudFoundry.
The client derives the registration info (url and metadata) from the
VCAP environment variables.
The server computes a unique instanceId and the correct headers for the
cf router based on the metadata provided by instances. Also suppots the
CloudFoundry discovery client ootb.

closes #434

... to support multiple HttpHeadersProviders

The info should be updated when the registration has changed. In order
to prevent a stale instance info, the sba client includes a "startup"
timestamp in the metadata as default. So when the instance is restarted
the registration changes and the info is updated, even when the instance
isn't considered as down in between.

To prevent this when using a discovery client you need to add a value
to the metadata which changes with every restart.
(e.g. `random=${random.value}`)

fixes #556