Merge pull request #70 from datadryad/trello-56

Include ${default.solr.log.dataonemn.server} in dspace.cfg
Skip pidFilter if "null"

Addresses DataOne MN Checker AssertionError: should still get a LogEntry when applying 'pidFilter' parameter [for host GET http://datadryad.org/mn/v1/log?toDate=2013-02-19T15:22:04.273%2B00:00&pidFilter=null ]
Move agent block to the top by manipulating XML

This fixes most cases of changing checksums, but not all of them
Make Resource Map XML reliably ordered by sorting elements
Merge branch 'trello-9-dataonemn' into dryad-dev