EDIT

adapt spring xsd versions in cdm-vaadin-servlet.xml

cleanup javadoc

ref #8706 adapting to new DateHeaderFilter package name

ref #8706 DateHeaderFilter to add Date headers to all servlet responses

ref #7356 moving VaadinServletConfiguration from web.xml into CdmVaadinConfiguration

ref #8188 configurable.xml loads hibernate properties from src/test/resources/hibernate.properties - cdm-vaadin

fix #7036 making sure all spring beans are disposed when the vaadin session times out

• RegistrationToolbar, RegistrationUI, RegistrationWorkingsetPresenter, NavigationManagerBean as DisposableBean
• seetting the vaadin closeIdleSessions parameter to true in web.xml

ref #7206 replacing CdmEntityCache by CdmTransientEntityCacher and implementing EntityCacheDebugger

ref #7059 ref #7046 using kindOfunit for TypeDesisgnations instead of DerivationEvent type and fixing save and LIE problems:
- intoducing EntityCache to allow re-using previously loaded entities
- CdmEntityCache implements EntityCache
- ToOneRelatedEntityReloader to replace entities loaded by the LazySelect...

Revert "ref #7035 reducing heardbeat interval to 30s to cleanup open connections" since we no longer need forces cleanup of open view, see issue #7035 for details

This reverts commit 475ec4ee62660184e6c875d3209bcaff8184b276.