solving ticket #1158 Generate the provenance block at collection time
provenance/identifier take the oai:identifier and not the identifier pointed by the metadata_identifier_xpath
Fixed test condition on $status when setting the <about>/<dataInfo> section.
$status -> dollar sign escaped for stringtemplate
dri:recordIdentifier was not initialized because of an error in string template (xpath in place of $xpath$)
handled deleted records case
dataInfo moved in about section
fixed generation of header fields
fixed tags
added mdbuilder for openaire