Better integrated explanation of the 'default' profile with both XML
and Java config examples showing the same thing.

Issue: SPR-11256

Issue: SPR-11307

When adding headers generically, MockHttpServletRequestBuilder now
recognizes Content-Type and updates the contentType field accordingly.

Issue: SPR-11308

Also making 'description' available on SimpleTriggerFactoryBean.

Issue: SPR-9771
(cherry picked from commit 7502ecd3)

This change adds a protected method to DefaultHandshakeHandler to
determine the user for the WebSocket session. By default it's
implemeted to obtain it from the request.

Issue: SPR-11228

The Jetty ServletWebUpgradeRequest implements getUserPrincipal to
return the Principal from the HttpServletRequest on the upgrade.
This change ensures we can fall back on that.

However the JettyRequestUpgradeStrategy still passes the user from
HttpServletRequest from the upgrade, in order to work with Jetty
9.0.x and avoid running into this 9.1.x issue:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=423118

Issue: SPR-11299

This is short to avoid having to use MockMvcRequestBuilders.request()
and instead have a simple patch(url, params...)

Issue: SPR-11304

* pull429:
  Fix various documentation issues

- Remove formatting that interferes with code highlighting
- Fix some XML syntax issues
- Added missing punctuation

* ascidoc-liveupdate:
  Hard-wrap CONTRIBUTING-DOCUMENTATION at 90 chars
  Improve the "contributing documentation" readme

Update the "contributing documentation" readme to include the correct
gradle goal and provide a troubleshooting section.

* SPR-11280:
  Removed reference to Cactus from documentation

Issue: SPR-11280

Corrected documentation regarding the CatchAllConverter in the XStream
javadocs.

The Java and XML config for STOMP WebSocket applications now supports
configuring message converters.

Issue: SPR-11184

* pull432:
  Removed extraneous character from the online documentation

Suppressing deprecation warnings for
MockHttpServletResponse.setStatus(int, String).

In sync with our Tiles3 TilesContainer implementation now, as far as possible.

Issue: SPR-11285

Issue: SPR-11262

Consistent support for setStartTime in CronTrigger(Factory)Bean and SimpleTrigger(Factory)Bean, and consistent declaration of varargs in scheduling.quartz package

Issue: SPR-10940

While we've had basic Quartz 2.2 support before, a few details were missing:
* LocalDataSourceJobStore's ConnectionProvider adapters need to provide an empty implementation of Quartz 2.2's new initialize method.
* SchedulerFactoryBean's "schedulerContextMap" needs to be explicitly declared with String keys, otherwise it can't be compiled against Quartz 2.2 (forward compatibility once we're dropping Quartz 1.x support). This doesn't hurt against older Quartz versions either, since the keys need to be Strings anyway.

Issue: SPR-11284

Added setModulesToInstall with convenient Class vararg, renamed setFindModules to setFindModulesViaServiceLoader, made existing setModules override any other setting

Issue: SPR-11040