Metacat

Ensure we have the object and sysmeta params for MN.create(). We were getting a fatal SAX parsing error encapsulated in a ServiceFailure when a science metadata object param was null. Cut it off at the pass after parsing the MMP entity.

An example python script that uses the python client to loop through a list of
files, read them from disk, and insert them into metacat.

make it clear that the Apache config files are samples and may need to be modified for different servers
http://bugzilla.ecoinformatics.org/show_bug.cgi?id=5516

update system requirements to be more reasonable

use larger ("text") db field for guid in the xml_access.accessfileid column

use EML 2.1.1 tag as final tag for the schema
http://bugzilla.ecoinformatics.org/show_bug.cgi?id=5532

use RELEASE_EML_UTILS_1_0_0 for EML style sheets
http://bugzilla.ecoinformatics.org/show_bug.cgi?id=5532

comment our the Demis world map layer -- it was prompting for username/password to use the WMS

Use the Collections class from java.util.

Remove null field tests in the IdentifierManager class. Schema-level required fields are checked on serialization/deserialization using JibX during the REST resource handler classes. Other required fields are checked in MNodeService and CNodeService, higher in the stack.