Fixes gh-462

The new test asserts that a profile defined in one profile can be
switched off in another. Seems to work.

More gh-483

fixex #461

Replace the confusing `spring.profiles.active` `+` syntax with a new
`spring.profiles.include` property.

Fixes gh-483, Fixes gh-534

Fixes gh-532, Fixes gh-506

Spaces -> Tabs, version number, whitespace.

Fixes gh-504

Fixes gh-419

Fixes gh-462

Also added JSON and tweaked properties settings.

Fixes gh-511

Fixes #531

Fixes #530

The most natural order is "more specific locations win". That way
if a use has application.properties in the root of a JAR (as is
normal), overrides can always be made on
classpath:/config/application.properties (as well as
file:./application.properties which has always been the case).

Before this change properties in classpath:/config/* were over
written by those in the root location, not the other way round.

Fixes gh-527

This commit adds a documentation note explaining how to change
the delimiters used to filter maven tokens as these conflict with the
delimiters used by Spring (i.e. ${foo:default}).

Fixes gh-471

Fixes gh-491

* doc-appendix:
  Review of the Appendix

This commit reviews the Appendix of the Spring boot
doc, fixing mostly typos.

Change the initial fix for OSX Java 1.6 compatibility by removing the
need for a direct `tools.jar` dependency.

It appears that `system` dependencies are always pulled in when
used in a Maven plugin. This makes the the dependency on `tools.jar`
particularly brittle since we need to make assumptions about where
the jar is located.

Since the tools jar is *only* needed for Spring Loaded support, the
plugin has now been updated to locate the jar programmatically and
call it via reflection. This should reduce the risk of problems when
using the plugin and at the very least isolate them to Spring Loaded
support.

(See original commit b8c47200)

Fixes gh-497

Fixes gh-525

If user sets addresses it supercedes anything that was set in host
or port (same as in the native ConnectionFactory).

Fixes gh-524

* json-sort-keys:
  Add support for sorting json keys

Add `jsonSortKeys` property to HttpMapperProperties.

Fixes gh-498

Minoir polish for wrapping at 90 and tabs instead of spaces.

This commit reviews the How-to part of the Spring boot doc,
fixing mostly typos.

See gh-521