This reverts commit 32d778e5.

Downgrade from 1.1.1.BUILD-SNAPSHOT to 1.1.0.RELEASE in order to
satisfy enforced release requirements.

Update the BasicErrorController so that it no longer needs to implement
@ControllerAdvice or have an @ExceptionHandler method.

A new ErrorAttributes interface is now used to obtain error details,
the DefaultErrorAttributes implementation uses a
HandlerExceptionResolver to obtain root exception details if the
`javax.servlet.error.*` attributes are missing.

This change also removes the need for the extract(...) method on
ErrorController as classes such as WebRequestTraceFilter can
now use the ErrorAttributes interface directly.

See gh-839, gh-538
Fixes gh-843

Conflicts:
	spring-boot-dependencies/pom.xml

Closes #841

We might need to revisit this to allow more fine-grained
control by users, but it seems like a sensible default.
The BasicErrorController now uses both of the deafult strategies
(ResponseStatusExceptionResolver and DefaultHandlerExceptionResolver)
from Spring MVC to try and determine an appropriate response.

Fixes gh-839

Temporarily remove the Spring Security BOM import as version numbers
for the imported projects don't automatically get resolved by the
gradle plugin.

See gh-838

Add replace goals to update the Spring Boot version in the gradle and
ant samples during the release process.

Fixes gh-425

Fix maven warnings caused by missing version information on the
root POM.

* _data-platform:
  Read data-{platform}.sql in addition to data.sql

Update DataSourceAutoConfiguration to read platform specific `data.sql`
files in the same way as `schema.sql` files.

Fixes gh-837

Rename the rabbitHealthIndicator bean which was accidentally named
redisHealthIndicator.

Extract WebMvcProperties from WebMvcAutoConfiguration and also
update conditionals to use @ConditionalOnProperty.

Add `spring.resources.add-mappings` allowing users to configure if
resource mappings should be added or not.

Fixes gh-804

Update ConditionalOnProperty to optionally support relaxed form names.

Fixes gh-835

Update reference documentation to make it clearer why you might not
always want to use the spring-boot-starter-parent.

Fixes gh-774

Update to latest release of Spring Plugin and provide dependency
management for all of its modules

Closes #802

Add an explicit dependency to `hamcrest-core` in the
`spring-boot-starter-test` POM. This prevents version 1.1 from
accidentally being pulled in via junit.

Fixes gh-810

Reorder dependencies so that they're consistently in alphabetical
order

Update @ConditionalOnProperty so that properties that are present but
contain the value `false` are not considered a match.

Fixes gh-812

Fixes gh-811

Rework HealthIndicator support

* conditionalOnPropertiesPresent:
  Add @ConditionalOnProperty annotation

Add @ConditionalOnProperty which enables conditional bean creation when
all required properties are defined in the Environment.

Fixes gh-812