Wrap stacktrace output in GitHub MarkDown code tags.
Merge pull request #755 from Gelmir/stacktrace_gh_md

Wrap stacktrace output in GitHub MarkDown code tags.
Forbid newlines in rename torrent dialog.
Fix NSIS for included qt translations. Closes #762.
Updated NSIS Czech translation by vilim.
Updated Czech translation by vilim.
Merge pull request #765 from Gelmir/no_newline_for_rename

Forbid newlines in rename torrent dialog.
Updated portuguese-BR translation by marinho.
Updated NSIS portuguesBR translation by marinho.
Sort invalid dates always at the bottom. Closes #106 and #735.
Updated NSIS spanish translation by alfrix.
Update NSIS croatian translation by delakroa.