to test - add both image and non image files to a 'files to download'
block.
On view page click on the 'details' link.
- Non image files go directly to a page showing meta information and
download link.

- Image files go to same page but show just the image + another
'details' link that takes you to the metadata page

Patch changes the initial link name from 'details' to 'view' for image
artefacts.

Change-Id: I6ca52cf5eecbc533948447133fb4f7e51de4c9c3
Signed-off-by: Robert Lyon <robertl@catalyst.net.nz>