Improve the caching options for all (external) rest pipelines

Proposal: To the restApiPipeline, JaxrsRestContentPipeline and JaxrsRestPlainPipeline add :

<ref bean="pageInfoRenderingValve" />
<ref bean="pageCachingValve"/>

Note that the 'pageInfoRenderingValve' is required, see HSTTWO-3618

note the page caching only gets activated when you set hst:cacheable = true on mount/sitemapitem

Secondly, I want to remove the noCacheResponseHeadersValve from JaxrsRestContentPipeline and JaxrsRestPlainPipeline: let end projects inject this valve themselves! It is very unhandy that we now by default have all kind of no caching headers set which is general is undesirable. I'll create upgrade documentation for this that in case a project depends on the noCacheResponseHeadersValve (for some reason they need it), that they can add it themselves