DS-1503 use getAttribute first before attempting to check getHeader for
the user value. ShibUseHeaders is not enabled by default in Apache.
[DS-1456] Make webapp.s register in a new database table when started, so we can
list them later.
Replace kooky URL calculation with fetching it from the configuration.
Reorganize, refactor, implement an alternative MBean approach for trial.
Record 'isUI' in database; add code to 'dspace version' to consume the table.
MXBean approach didn't pan out, so remove (most of) the code.
Remove added context parameters no longer used.
When listing webapp.s, delete records for any not found living.

This sends a HEAD request to the registered URL for the webapp and
assumes that the app is dead if result is not 200.

This change caused a cascade of changes to the treatment of the
database table, because the DBMS layer insists that a table's primary
key be INTEGER.  It was necessary to introduce a new column for the
purpose.  This also means you can have more than one running instance
of the same UI, if you wish.  But it also means that the sequence
required by the new column will overflow after about 2 billion starts.
Declare use of slf4j-api.
Export all collections of a community recursively
See https://jira.duraspace.org/browse/DS-1644

Replace the session variable being queried to determine if a forced redirect to https is needed.
Adds MetadataWebService curation task
Add dspace-rest, using Jersey, light support for Collection / Community
Wire up dspace-rest to build a webapp
Add some install instructions to the DSpace-Rest readme
Renamed HelloWorld to RestIndex
Rest index links to available endpoints
Use contextPath to link out
Move pieces of Collection data into a "metadata" element:name, license, handle
Don't emit an EMAIL element if EPerson has a null email