[cgiapp] file uploads and encodings

[N1zero]

Hi Todd,

After making the educated guess, I would then convert back to unicode, 
displaying that (truncated if necessary) to the user and ask them to 
confirm whether it reads as they would expect it.  If they hit the <No, 
that's a bit garbled> button then I know not to send it to the cobol 
app.  I'd then log that as an example of failure, so that gradually the 
guessing would be coded to get smarter.  (If no failures, even better.)

Nic