Added classes used for user authorization.
Sorted usings.
Added AuthorizationHandler, updated authorization classes.
Merge pull request #31 from jorisvervuurt/master

Added main classes used for user authorization.
Added required references for reading HTTP header fields.
Changed fields to properties; added AuthorizationHandler.
Added more useful summaries.
Merge pull request #33 from jorisvervuurt/master

Updated BaseManager.
Merge pull request #32 from teugis/master

Added IsPrivate and PostId to CreateQuestion and added answer question plugin factory.
Merge pull request #34 from teugis/master

Fixed includes on queries.
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 app.conf in data layer.
Mail service update

- FIXED: Incoming mails are send to the webservice
- ADDED: A confirmation mail is send to the questioneer
- ADDED: Unit Tests
Added PostId and IsPrivate to CreateQuestion.
Added classes used for user authorization.
Sorted usings.
Added send answer plugin factory.
Added AuthorizationHandler, updated authorization classes.
Added required references for reading HTTP header fields.