Make discoverCORELinks indentation consistent with the rest of success.js.
Display total number of hits in CORE.

If there are no hits, say so.
Reformat author lists in CORE links.

Previously, the entire author list would be included - now three or
more authors get truncated with "et. al.".
Add a link to see more CORE results.
Fix indentation.
Merge pull request #204 from jezcope/feature/167-handle-empty-core-result

Generally improve display of CORE hits