Modified Crosswalk definition to match Importer expectation

applications/registry/core/libraries/importer.php expects a crosswalk
to have a validate($payload) method - see line 874 of that file.
Importer expects crosswalk to have metadataFormat()
Merge pull request #1 from DigitalCurationCentre/crosswalks

Modified Crosswalk definition to match Importer expectation
removed aSasASasASs garbage text from see full record link
minor styling fix
routes DOI
added cache to gitignore
Cherrypick NLA Pullback fixes
update orcid xsl to support new work type
Update ORCID library and interfaces
Limit recently updated records to users with <10 data sources
Merge pull request #9 from au-research/registry_delta_records_timeout

Limit recently updated records to users with <10 data sources
Add matching for exact as well as sloppy searches
Remove fulltext matches from breaking weighting
Merge pull request #15 from au-research/orcid_import_fix_empty_values

fix for inputting empty values into orcid
fix conflicts for logging orcid
fix conflicts
merge conflicts
updated global config sample file
fix: matching identifier count appears twice in extrif to solr