[LMS-1504] hide edit buttons

.../generic/client/web/client/application/ProjectViewer.java

...eric/client/web/client/application/ui/AbstractViewer.java

...b/client/application/ui/attachment/AttachmentBrowser.java

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

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

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

...eric/client/web/client/application/util/DataSetUtils.java

.../web/client/application/dataset/GenericDataSetViewer.java

...lient/application/experiment/GenericExperimentViewer.java

...nt/web/client/application/sample/GenericSampleViewer.java