Fix broken documentation links

Fix links to `actuator-noweb`, `actuator-log4j` and `hornetq` samples.

Fixes gh-1613
Make Thymeleaf @ConditionalOnWebApplication

If user creates a Thymeleaf app with a parent-child context then the
child should contain all the web-specific pieces (and they are likely
to fail fast if they need to be ServletContextAware, or slower if they
try to locate a WebApplicationContext at runtime). This can't happen
if the view resolver is being added to the parent.

Freemarker and Velocity already have similar tests because it is assumed
that they should be usable outside a web app, so this change just does the
same for Thymeleaf.

Fixes gh-1611
Copy server customization to management context

If the actuator endpoints are configured on a different port then there
are some settings in the main ServerProperties that we would like to
re-use (e.g. the access log). The easiest way to do that is to just
configure the management server using the same ServerProperties instance
and then overwrite the things that are different (and stored in
ManagementServerProperties).

Fixes gh-1581
Merge branch '1.1.x'