Logic is working, but there's still work

TODO:
- Fix the issues with the login in Explorer
- Handle bad date formatting in an elegant way
- Add validation to the responses in the SMTPClient, especially the AUTH
part
- Change the path of the database files
- Go over the PDF and check that what we have fits the descriptions
exactly
- Do general QA of all the system in different browsers
- Add comments all around
- Do the readme.txt