[BW]: [NIP] Created file attachment widget to manage file attachments in the mail editor/mail viewer.
[BW]: [NIP] Further mail editor work (file attachment related).
[BW]: [Fix] Potential fix of MailViewer display problem (to be checked).
Merge branch 'master' of https://github.com/InvictusInnovations/keyhotee
[BW]: [NIP] Further file attachment widget implementation.
Merge branch 'master' of https://github.com/InvictusInnovations/keyhotee