Metacat

In IdentifierManager.updateSystemMetadata(), add a check for invalid system metadata (fields that throw a NullPointerException on access) to ensure that system metadata is populated correctly. Updated calling classes to handle the exception.

Fixed formatting to make fixed-width line much shorter so boxes fit on the page.

Removing obsoleted Admin Guide -- this guide is now maintained using Sphinx in docs/user/metacat -- the word document and PDF file are now obsolete.

Properly initialize the servlet context when starting alternate servlets, which makes sure that the configuration files have been loaded and config properties are available.

Removed link to obsolete PDF file.

Modifications to make the build more readily find locally installed versions of
sphinx-build, and to remove the unneccary 'html' directory; output of
admindoc is now written directly into build/docs.

Modified build to include documentation in the war file that is generated as
part of the build, if the 'documentation' target has been run before the
war target. This is not done automatically because its not clear if all
people will have the proper sphinx environment set up to build the...

Adapted the build to be able to generate the Sphinx Admin Guide, and to
better handle the copyright for Javadoc generation.

Added links to Javadoc. Tuned the layout a bit.

Completed first draft of Admin guide chapter on DataONE.