SP-352 / BIS-236 : Provide Feedback to end user when doing an (Custom) Upload

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

...t/web/client/application/ui/AbstractRegistrationForm.java

...ic/client/web/client/application/ui/CustomImportForm.java

...client/web/client/application/ui/widget/IInfoHandler.java

...eric/client/web/client/application/ui/widget/InfoBox.java

...nt/application/ui/widget/PopupDialogBasedInfoHandler.java

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