ANNPLT-71: Add option to upload attachments into an announcement
Update
ANNPLT-71:
Refactor the Attachments code to reflect the latest changes made in CMSPLT-25. Attachment "info" is now stored as a JSON string rather then simply an attachment ID represented as a long value.
Refactor Attachments code to reflect the latest changes in CMSPLT-25. Attachment info is now stored as a collection of JSON strings.