Fixes gh-2110

Update MongoDataAutoConfiguration to set the MongoMappingContext
initialEntitySet by scanning for @document or @Persistent classes
from AutoConfigurationPackages.

Fixes gh-2107

Update AbstractEndpoint so that the `enable` property is optional and
when it not specified the `endpoints.enabled` property will be used.

This allows users to switch the way that endpoints are enabled. Rather
than opting-out specific endpoint enablement the `endpoints.enabled`
property can be set to `false` and specific endpoints can be opted-in.

Fixes gh-2102

Since we use a composite ViewResolver glbally by default it can be
awkward to switch off the view technology that you have on the classpath
but aren't actually using.

Conflicts:
	spring-boot-dependencies/pom.xml

Closes gh-2021

* patch-1:
  Fix typo in documentation

The module’s artifact id is spring-boot-configuration-processor for
which dependency management is also provided.

Since AbstractHandlerMethodMapping.getHandlerMap() is final it can't
be cglibbed and a proxy will barf if you try and call that method.
The RequestMappingEndpoint can be protected simply by defensively
checking if the mapping is a proxy before trying to inspect it.

Various updates and polish to prepare the reference documentation for
Spring Boot 1.2.

Fixes gh-1903

Remove the Cloudbees section since they are shutting down their PaaS.

Fixes gh-2105

Clean and align with changes in Spring Boot 1.2

Fixes gh-2104

Update the logging section to reflect changes in Spring Boot 1.2

Fixes gh-1790

Add a hint to show that the `configure` method is now optional.

Fixes gh-2074

Fixes gh-2103

Update JarCommand to only include nested libraries that are actually
zip files. Similar to commit 38585bf3 which introduced the same
functionality to the Repackager.

Fixes gh-2094

Fixes gh-2098

Fixes gh-2097

Fixes gh-2096

Fixes gh-2096

Call `context.getServletContext().setExtendedListenerTypes(true)` to
ensure that ServletContextListeners can be registered with Jetty 9.

Fixes gh-2058

flyway.init and flyway.target are two options that are missing from the
meta-data following the change in f0bc3c08. It turns out that both these
properties have an additional setter taking a String so they shouldn't be
excluded after all

Closes gh-2088

Fixes gh-2093

Closes gh-2038

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 Rest, Hypermedia and HttpMessageConverter auto-configuration to
ensure beans are created in the correct order.

Prior to this commit the MappingJackson2HttpMessageConverter bean would
not be created because Spring Data Rest's TypeConstrained versions had
already been registered.

Fixes gh-1729

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

See gh-2084

Fixes gh-2091

This reverts commit 17631486.