Fix issue where /resource/not-an-identifier returned blank page

ResourceIdentifierController was throwing a RuntimeException but there
is handling in place to catch an IdentifierNotFoundException
Move View File Details link

View File Details link was previously on the line with the download
link, which was based on METS metadata for the file.  Embargoed items
hide this metadtata, so the field wasn't rendered.

Moved "File Details" to a new table row, since it doesn't depend on the
mets metadata, just the file's DOI.
Copy original version of item-view.xsl from...

dspace-xmlui/dspace-xmlui-webapp/src/main/webapp/themes/Mirage/lib/xsl/aspect/artifactbrowser/item-view.xsl
Add checksum row to bitstream details, incl. css tweaks
Increase max length for shortened strings in item-view
Merge branch 'dan-trello-69' into dryad-dev