Metadata display ie8 9885

Fix a couple of minor issues in IE8

To test:
 - Browse to Acquisition tab and check that the show/hide unset fields works the same as on other browsers (same fields are shown / hidden)

 - Add a couple of images to the basket, click the basket icon at the top of the page and -> Manage basket. Check that when you click on rows of the table, the image rows are selected (background colour changes).

--no-rebase