Closes gh-2336

Closes gh-2335

Previously, some classes that were annotatated with
@ConditionalOnWebApplication assumed that, if the application was a
web application, Spring MVC (spring-webmvc) would be on the classpath.
If it was not, the application would fail to start, typically with an
error relating to WebMvcConfigurerAdapter being unavailable.

This commit updates the affected configuration classes and annotates
them with @ConditionalOnClass(WebMvcConfigurerAdapter.class) to
ensure that their auto-configuration only takes effect if its a web
application and Spring MVC is on the classpath.

Fixes gh-2345

Sadly, Gradle handle's exclusions differently to Maven even when it's
processing a Maven pom.

In this case groovy-all is pulled in via org.crashub:crash.shell where
we've excluded it. This is enough to prevent Maven from pulling in
groovy-all when you depend on the remote shell starter.
org.crashub:crash.shell is also pulled in as a transitive dependency
of a number of other dependencies and Gradle requires each of these
to also exclude groovy-all for it to actually be excluded.

This commit adds the additional exclusions that are required to make
Gradle's behaviour sane.

Fixes gh-2257

Update InMemoryAuditEventRepository to consider the date when searching
for events. Also switch to a circular buffer implementation and update
the capacity to limit the total number of items rather than limiting
per principal.

Fixes gh-2291

The "Customizing ConfigurableEmbeddedServletContainer directly"
section should use `HttpStatus.NOT_FOUND` and not `HttpStatus.404` in
the sample code.

Fixes gh-2258

See gh-2180

Update spring-boot-dependencies to include all Jetty modules. The helps
to prevent issues when modules are pulled in transitively (for example
via solr).

Fixes gh-2180

Fix ParentAwareNamingStrategy to set ObjectName properties for the
'identity' and 'context' attributes. Also update JmxAutoConfiguration
to ensure that the ParentAwareNamingStrategy is created in each context
and that the `mbeanExporter` bean is created. Prior to this commit the
nested @EnableMBeanExport class always meant that the mbeanExporter
condition never matched.

Fixes gh-2243

Update WebMvcAutoConfiguration to ensure than the viewResolver bean
is not created if a user defined ContentNegotiatingViewResolver bean
is defined.

Fixes gh-2269

(cherry picked from 80d55c47)
Closes gh-2255

Closes gh-2262

Closes gh-2259

Closes gh-2244

 Closes gh-2234

Update WebMvcAutoConfiguration so that the RequestMappingHandlerMapping
bean is @Primary. Prior to this commit a NoUniqueBeanDefinitionException
would be thrown then using the MvcUriComponentsBuilder.

Fixes gh-2237

Closes gh-2215

Closes gh-2199

The various servlet containers that we support vary in the quality
of their diagnostics when ServletContext.addListener fails. To make
problem diagnosis easier, this commit ensures that the toString of the
the listener that was being added is included in the exception that's
thrown when a failure occurs.

Closes gh-2197

Fixes gh-2187

Closes gh-2151

Update LogbackLoggingSystem to protect against a potential null
CodeSource result.

Fixes gh-2149

Health indicator configuration keys have moved from the health.* to the
management.health.* namespace. This commit makes sure that these are
documented properly in 1.1.x as well.

See gh-2118

Fixes gh-2110

Closes gh-2021

Update DEFAULT_SESSION_TIMEOUT to use TimeUnit.MINUTES.toSeconds(30)
rather than TimeUnit.SECONDS.toMinutes(30) which would always return
0.

See gh-2084
(cherry picked from commit b33bbd56)

Update AbstractConfigurableEmbeddedServletContainer to set the default
session timeout to 30 minutes. Also correct Javadoc to specify that
the default is '30 minutes'.

Fixes gh-2084

Add a tip for both the Maven and Gradle "Packaging executable jar and
war files" section referring to the how-to.

Fixes gh-2086

See gh-2080

Partly back port changes from affb202e and 85c95744 to fix the usage
of JMS in the CLI. Restore the integration test using HornetQ and fix the
coordinates of the JMS API.

Fixes gh-2075

Extract some of the common property keys as constants.

Fixes gh-2068

Replace `classpath:db/migrations` with `classpath:db/migrations`.

Fixes gh-2063

SecurityAutoConfiguration, via its import of
AuthenticationManagerConfiguration, requires spring-security-config
to be on the classpath as AuthenticationManagerConfiguration extends
GlobalAuthenticationConfigurerAdapter from spring-security-config.

This commit makes SecurityAutoConfiguration conditional on the
presence of GlobalAuthenticationConfigurerAdapter so that the
auto-configuration will be disabled in its absence rather than causing
an app to fail to start.

Closes gh-2046