Fixed layout of "Add dataset" page.
Fixed layout of "Add dataset" page.

embaldridge/retriever,bendmorris/retriever,davharris/retriever,davharris/retriever,bendmorris/retriever,embaldridge/retriever,bendmorris/retriever,goelakash/retriever,henrykironde/deletedret,goelakash/retriever,henrykironde/deletedret,davharris/retriever,embaldridge/retriever