remove debian directory from master
Simple SMTP relay using Twisted API.
send encrypted mail
relay loops forever with twistd
add README file
email header is not encrypted
gpg wrapper is configurable
relay raises exception if recipient's key is not found
relay raises exception if recipient's key is not ultimatelly trusted
small refactoring
Merge branch 'feature/generic-wizard' into develop

The generic wizard (big) branch is now stabilised.
A bunch of refactors have gone together with this topic branch:

- client does not have any info included for default service providers.
- user has to run the first-run wizard and manually entry domain for sample provider.
- remove all remains of the older branding strategy for default provider.
- srp registration + authentication are integrated with the signup process.
make the check for valid client cert the trigger for first-run-wizard

Closes #803

And with this we've completed all features blocking the
release goal: generic client.
hide the systray icon until the firstrun wizard is complete

Closes #762
delete temp folder for management socket after client shutdown

Close #742
fix delete temporal files
fix delete temporal files
disable "next" button during validation

and wait for user to click it.
Closes #973
set commit page (no back button after validation)
add domain name to providerinfo page
TableWidget refactor

so we can use it also in the inline validation widgets.