Closes gh-11103

Closes gh-11102

Closes gh-11101

Closes gh-11100

Closes gh-11099

Closes gh-11098

Closes gh-11097

Closes gh-11096

Closes gh-11095

* gh-10545:
  Polish "Auto-configure templated welcome page"
  Auto-configure templated welcome page

Closes gh-10545

See gh-10545

Closes gh-11094

See gh-10870

* gh-10870:
  Align appendix edits with source code
  Make editorial changes to appendix-application-properties.adoc

Port editing changes from append to java source files to ensure that
IDE meta-data also reflects the improvements.

Closes gh-10870

See gh-10870

Rename `@DurationUnit` to `@DefaultDurationUnit` to make it clearer
that it only changes the unit if one isn't specified by the user.

Closes gh-11078

Align `MongoReactiveSessionConfiguration` `@ConditionalOnClass` with
`MongoSessionConfiguration`

See gh-11063

* gh-11063:
  Polish "Improve Spring Session auto-configuration tests"
  Improve Spring Session auto-configuration tests

See gh-11063

Closes gh-11063

This commit adds several configuration keys for customizing the
"Cache-Control" HTTP response header when serving static resources.

New keys are located in the "spring.resources.cache-control.*"
namespace; anything configured there will prevail on existing
"spring.resources.cache-period=" values, so as to mirror Spring MVC's
behavior.

Fixes gh-9432

Closes gh-11009

Closes gh-10942

Closes gh-11089

Closes gh-10335

Closes gh-11088

Closes gh-11087

* pr/11084:
  Polish "Align Session auto-config with Redis namespace config support"
  Align Session auto-config with Redis namespace config support

Closes gh-11084

See gh-11084

See gh-11085