Implement duplicate check for WinSCP
Fix for finding duplicate files
Implement duplicate check for SshNet and FTP
Fuck you, intellisense.
Implement a dialog for duplicate files

Also added a CommandLink button control that actually works.
Use the uploader events instead of the return value

...so you don't get an error when you cancelled the upload.
Only copy the URL when the upload succeeded
Bump version to 1.7.1
Merged duplicate-check into master