Mail service

The IntelliCloud mail service subscribes itself to the inbox of
intellicloudquestions@gmail.com. Once a new e-mail is received the
server pushes the message to the service where the message is being send
to the backend. Then a confirmation e-mail is send to the questioneer.
Mail service dlls
updated the Feedback and Answer Managers so they work error free
Mail service update

- FIXED: Incoming mails are send to the webservice
- ADDED: A confirmation mail is send to the questioneer
- ADDED: Unit Tests
Merge pull request #30 from koekoek/master

Mail service update
Merge pull request #29 from daanvc/master

updated the Feedback and Answer Managers so they work error free