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
Links to top now target # instead of #ds-body, to scroll to top of the page (instead of the body section)
Dynamically change logo to dev/staging/demo based on port

Code is ready, assets should be placed in the following locations when created

dryad-repo/dspace/modules/xmlui/src/main/webapp/themes/Mirage/images/dryad-logo-demo.png
dryad-repo/dspace/modules/xmlui/src/main/webapp/themes/Mirage/images/dryad-logo-dev.png
dryad-repo/dspace/modules/xmlui/src/main/webapp/themes/Mirage/images/dryad-logo-mrc.png
dryad-repo/dspace/modules/xmlui/src/main/webapp/themes/Mirage/images/dryad-logo-staging.png
Added logos from mercedes
Added restyled logos and additional logos for demo/mrc
Include Data files in EditMetadataActionXMLUI action

Fixes Trello 69: (dan) when a curator has a claimed item, if they click
on the data package title , the data files do not display
Move call to file details template to top of choose block

This shows bitstream info on file details page when viewed by a curator
Merge pull request #247 from datadryad/dan-trello-69

Cleanup from website redesign