Added Dutch translations, improved a few original ones

Author: GeoSander

web/src/main/webapp/WEB-INF/classes/org/fao/geonet/api/Messages.properties

@@ -129,7 +129,7 @@ Message: \n\
 View record: \n\
 {{link}}
 
-# SiteName / Task / recordTitle statusName by userName
+# SiteName / Task / taskName for recordTitle
 status_change_doiCreationTask_email_subject={0} / Task / {1} for '{{'index:resourceTitleObject'}}'
 # author
 status_change_doiCreationTask_email_text={0} requested creation of the DOI for the record '{{'index:resourceTitleObject'}}'. Could you proceed to the DOI creation by {4}.\n\
@@ -191,19 +191,19 @@ exception.resourceNotFound.resource.description=Metadata resource ''{0}'' not fo
 exception.resourceInvalid.metadata=Metadata is invalid
 exception.resourceInvalid.metadata.description=The metadata can't be submitted or approved
 exception.resourceNotEnabled.workflow=Metadata workflow is disabled
-exception.resourceNotEnabled.workflow.description=Can not be set the status of metadata
+exception.resourceNotEnabled.workflow.description=Metadata status cannot be set
 exception.resourceNotEnabled.applicationFeedback=Application feedback is disabled
 exception.resourceNotEnabled.applicationFeedback.description=Application feedback is disabled
 exception.doi.resourceContainsDoi=Record already contains a DOI
-exception.doi.resourceContainsDoi.description=Record ''{0}'' already contains a DOI. The DOI is <a href=''{1}''>{2}</a>. You've to update existing DOI. Remove the DOI reference if it does not apply to that record.
+exception.doi.resourceContainsDoi.description=Record ''{0}'' already contains a DOI. The DOI is <a href=''{1}''>{2}</a>. You have to update the existing DOI. Remove the DOI reference if it does not apply to that record.
 exception.doi.resourceAlreadyPublished=Record looks to be already published on DataCite
 exception.doi.resourceAlreadyPublished.description=Record ''{0}'' looks to be already published on DataCite with DOI <a href=''{1}''>''{2}''</a>. DOI on Datacite point to: <a href=''{3}''>''{4}''</a>. If the DOI is not correct, remove it from the record and ask for a new one.
 exception.doi.failedVisibilityCheck=Failed to check if record is visible to all for DOI creation
 exception.doi.failedVisibilityCheck.description=Failed to check if record ''{0}'' is visible to all for DOI creation. Error is ''{1}''.
 exception.doi.recordNotPublic=Record is not public
 exception.doi.recordNotPublic.description=Record ''{0}'' is not public and we cannot request a DOI for such a record. Publish this record first.
 exception.doi.resourcesContainsDoiNotEqual=Record already contains a DOI
-exception.doi.resourcesContainsDoiNotEqual.description=Record ''{0}'' already contains a DOI <a href=''{0}''>{1}</a> which is not equal to the DOI about to be created (ie. ''{3}''). Maybe current DOI does not correspond to that record? This may happen when creating a copy of a record having an existing DOI.
+exception.doi.resourcesContainsDoiNotEqual.description=Record ''{0}'' already contains a DOI <a href=''{0}''>{1}</a> which is not equal to the DOI about to be created (ie. ''{3}''). Perhaps the current DOI does not correspond to that record? This may happen when creating a copy of a record having an existing DOI.
 exception.doi.missingSavedquery=Record missing saved query
 exception.doi.missingSavedquery.description="Record ''{0}'' is in schema ''{1}'' and we cannot find a saved query with id ''{3}'' to retrieve the DOI. Error is {4}. Check the schema {5}SchemaPlugin and add the DOI get query."
 exception.doi.recordNotConformantMissingInfo=Record is not conform with DataCite format
@@ -241,12 +241,12 @@ api.metadata.import.errorDuplicatedUUID=You can't create a new record with the U
 api.metadata.import.errorDuplicatedUUIDDetailed=A record with UUID '%s' already exist and you choose no action on UUID processing. Choose to overwrite existing record or to generate a new UUID.
 api.metadata.import.errorNotEditorInGroup=You can't create a record in this group. User MUST be an Editor in that group
 api.metadata.import.errorFileRequired=A file MUST be provided.
-api.metadata.import.errorInvalidMEF=Import 0 record, check whether the importing file is a valid MEF archive.
+api.metadata.import.errorInvalidMEF=No records imported. Check whether the importing file is a valid MEF archive.
 api.metadata.import.errorEventStore=Impossible to store event for '%s'. Check error for details.
 api.metadata.import.errorMissingXsl=XSL transformation '%s' not found.
 api.metadata.import.errorDetectMetadataSchema=Can't detect schema for metadata automatically. You could try to force the schema with the schema parameter.
-api.metadata.share.errorMetadataNotValid=The metadata '%s' it's not valid, can't be published.
-api.metadata.share.errorMetadataNotApproved=The metadata '%s' it's not approved, can't be published.
+api.metadata.share.errorMetadataNotValid=The metadata '%s' is not valid, can't be published.
+api.metadata.share.errorMetadataNotApproved=The metadata '%s' is not approved, can't be published.
 api.metadata.share.ErrorUserNotAllowedToPublish=User not allowed to publish the metadata %s. %s
 api.metadata.share.strategy.groupOwnerOnly=You need to be administrator, or reviewer of the metadata group.
 api.metadata.share.strategy.reviewerInGroup=You need to be administrator, or reviewer of the metadata group or reviewer with edit privilege on the metadata.