metadata extraction : case date is not under correct format
metadata validation : resolution can be = 0
case iTag response is invalid
delete catalogue and clean core
delete single record
send mail status
clean core
use get capabilities
update user libraries
remove unused import
move getSource in execute method
mail classes for metacatalogue
util classes
interface resource
add mail send properties
last thesaurus
small change for itag
change output format for geojson standard compliance
public host domain in first/prev/next links
new reference for property file