Drop protocolHeader and remoteIpHeader defaults

The `protocolHeader` and `remoteIpHeader` no longer have default values
and must be opt-in.

Fixes gh-1624
Add `server.tomcat.port-header` support

Update Tomcat ServerProperties to support the RemoteIpValve portHeader
property.

Fixes gh-1616
Merge branch '1.1.x'
Add missing @since tag
Polish
Merge branch '1.1.x'
Next development version
Fixup version numbers following release
Merge branch '1.1.x'

Conflicts:
	all pom.xml files
Fix typo in HttpMessageConverters auto-conf Tests
Merge branch '1.1.x'
Add UTF-8 charset element to logback base.xml

Update base logback configuration to include a UTF-8 charset element
which helps with multilanguage support.

Fixes gh-1618
Merge pull request #1618 from mkanev/master

* pull1618:
  Add UTF-8 charset element to logback base.xml
Upgraded ActiveMQ version to 5.10.0

Fixes gh-1609
Merge pull request #1609 from hekonsek/spring-boot-amq-version-upgrade

* spring-boot-amq-version-upgrade:
  Upgraded ActiveMQ version to 5.10.0
Fix typo in javadoc
Merge pull request #1633 from johnktims/master

* pull1633:
  Fix typo in javadoc
Add missing @Param annotations to CityRepository in Data REST sample

Without the @Param annotations, using either of the search URIs would
resulted in a 400 response and an error describing the lack of @Param
annotation.

See gh-1627
Add tests to Data REST sample for search operations

Closes gh-1627
Merge branch 'gh-1627' into 1.1.x