Update todo_and_in_progress.txt
First remotly working version with IMAP

It still runst better than POP3 \o/
See description

- Removed old POP3 hosts
- Removed using statements for OpenPop.POP3 and OpenPop.MIME
- Added comments
- Added some other things
- fixed things
Fixed Refresh button in the InboxWindow

- tweaked some things
Merge pull request #10 from Tijndagamer/POPtoIMAP

POP3 to IMAP4