LMS-751 Automatic refresh: sample and material browser

.../client/web/client/application/MatchingEntitiesPanel.java

...t/application/framework/LastModificationStateUpdater.java

...ient/application/ui/experiment/ExperimentBrowserGrid.java

...t/web/client/application/ui/grid/AbstractBrowserGrid.java

...client/application/ui/grid/AbstractSimpleBrowserGrid.java

...b/client/application/ui/material/MaterialBrowserGrid.java

...lient/application/ui/material/MaterialBrowserToolbar.java

...t/web/client/application/ui/sample/SampleBrowserGrid.java

...eb/client/application/ui/sample/SampleBrowserToolbar.java