If you inject the class (via a servlet parameter) it seems that
Jersey tries to create all the beans for you (and fails). I thought
it was supposed to work (according to the docs), so I'm a bit confused
but the sample now has Spring DI and the tests pass.

Fixes gh-1981

Update the ConfigurationMetadataAnnotationProcessor nested class
algorithm to prevent inner classes being added as both groups and
properties.

Fixes gh-1975

See gh-1970

Fixes gh-1972

Previously, an Enum that is defined as an inner class of a
@ConfigurationProperties pojo was wrongly detected as an nested group.

This case is now handled explicitly and covered by a test.

Fixes gh-1971

Add a companion module that IDE developers can use to read configuration
metadata from multiple sources into a single repository.

ConfigurationMetadataRepository provides access to groups and items as
well as an harmonized view on "sources" (that is the POJOs that have
contributed to a given group).

Closes gh-1970

Fixes gh-1951

Guard against Spring Data REST TypeConstrained Jackson converters
replacing the default MappingJackson2HttpMessageConverter.

Fixes gh-1968

Update HttpMessageConvertersAutoConfiguration to only register Gson
support when Jackson is not on the classpath.

Fixes gh-1967

Rename mongo to mongodb.

Fixes gh-1966

Update MongoDataAutoConfiguration to provide easier configuration of
CustomConversions, the MappingMongoConverter, MongoMappingContext
and an authentication database.

Fixes gh-1619
Fixes gh-1730

Update @IntegrationTest to include SqlScriptsTestExecutionListener.

Fixes gh-1965

Update the configuration meta-data appendix to clarify a few things.

(cherry picked from commit d4bf221f)

* pull1963:
  fix copy in README
  Disable check of Groovy template location by default for CLI apps

In 1.1, the Groovy template support did not check that its configured
template location exists. A check was added in 1.2, however this
breaks CLI web applications that don't have the expected templates
location.

Rather than reintroducing 1.1's behaviour by removing the check, this
commit updates the CLI to set
spring.groovy.template.check-template-location to false by default.
This allows flow-blown applications to benefit from the check, while
allowing CLI apps to behave as they did in 1.1.

Closes gh-1959

Fixes gh-1961

Fixes gh-1960

Fixes a couple of typos in the documentation:
* `x-forwarded-protocol` is not the standard name for this header
* `require_https` is not an existing property, but rather `require_ssl`

Some environments do not have a tmpdir so it can be null.

Conflicts:
	spring-boot/src/main/java/org/springframework/boot/logging/logback/LogbackLoggingSystem.java
	spring-boot/src/test/java/org/springframework/boot/logging/logback/LogbackLoggingSystemTests.java

Previously, if Logback was being used as Boot's logging system, but
Log4J was also on the classpath before SLF4J and Logback, JBoss
Logging would use Log4J for its logging. This lead to warning messages
being produced as Log4J was not configured:

log4j:WARN No appenders could be found for logger (org.jboss.logging).
log4j:WARN Please initialize the log4j system properly.

This commit updates LogbackLoggingSystem to set the
org.jboss.logging.provider to "slf4j". This ensure that JBoss Logging
will use SLF4J and Logback as intended even when Log4J is also on the
classpath.

Closes gh-1928

Update the ConfigurationMetadataAnnotationProcessor to detect the
@Deprecated annotation on getters or setters.

Fixes gh-1846

* pull1931:
  Fixed potential ClassCastException getting error

Update DefaultErrorAttributes to expect a `Throwable` ERROR_ATTRIBUTE
rather than an `Exception`.

Fixes gh-1931