[LMS-2367] introduced trash button in top menu (instead of option in Administration menu)

...d/openbis/generic/client/web/client/application/Dict.java

...ic/client/web/client/application/IGenericImageBundle.java

...s/generic/client/web/client/application/menu/TopMenu.java

...neric/client/web/client/application/menu/TrashButton.java

...t/application/menu/administration/AdministrationMenu.java

...d/openbis/generic/client/web/client/application/trash.gif

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

...java/ch/systemsx/cisd/openbis/public/common-dictionary.js