[Announcement Board Export]: Modified the announcement exporting contract to conform to the 'expectations' of the boss (FMS). Events or news not fully defined in a certain language will be ignored for that language as opposed to the former behaviour, where default locale would be applied instead.
Bug fix: #382814
- removed unused import that referred a no longer existing class
Minor Change: #382853 - added new labels to error messages
Minor Change: remove hard code from jsp
Bug fix: #382942 - the comparison supports null values