Minor fixes for Checksum Checker Daily Report Emailer. Ensure it only sends an email if there's a possible issue. Also include DSpace hostname in email subject.
[DS-1411] Handle multiple-file patterns (-m) in the current directory.

If there is not at least a relative path (dir/patt.ern) then
File.getParentFile() returns null.
DS-1536 having a DOT in handle prefix causes identifier.uri to be cut off when being created.
Tidy up some warnings and hints
Remove all traces of metadataStorageInfo.

The field is never set in SolrLogger, so getMetadataStorageInfo always
returns null.  Attempts to dereference the Map supposedly returned
should thus always terminate abruptly.
DS-1821 Internationalize the bitstream access icon alt text
[DS-1898] OAI not always closing contexts
Fixes DS-1860 to show all collections and communities in community list.
[DS-1834] Collection content source harvesting test does not check sets properly
[DS-1834] Collection content source harvesting test does not check sets properly
[DS-1848] OAI harvest issues when starting from control panel/command line
DS-1916 Error in update-sequence script in 4.0
DS-1918 added size for URL column
Merge pull request #479 from lap82/dspace-4_x-DS-1918

[DS-1918] added size for URL column
DS-1863 JSPUI eperson and group selection should use the new theme
[DS-1779] - Pagination link error in JSPUI discovery search
Solr Timezone Issue fixed
[maven-release-plugin] prepare for next development iteration

Doing the forgotten release step manually.
DS-1907 Hit highlighting not working, no abstracts for search results
Constrain the subquery to 'dc' fields