[BW]: [Fix] https://github.com/InvictusInnovations/keyhotee/issues/319
[BW]: [Ign] Code cleanup.
[BW]: [Fix] Fixed https://github.com/InvictusInnovations/keyhotee/issues/317
[BW]: [Ign] Small code cleanup in maileditorwindow.cpp.
Fixed mac os compilation on 10.8
Merge pull request #324 from wackou/fix_osx_compilation

Fixed mac os compilation on 10.8
- [Share contact] Add "Find contact" option to the context menu in the attachment table #308
- Small code cleanup in TFileAttachmentWidget