IntelliCloud Facebook service

Windows service that:
- Checks if the IntelliCloud Facebook page contains new posts
- Sends new posts to database
- Keeps track of the time of the post that was last send to the database
Added references
Merge remote-tracking branch 'upstream/master'
Created the Facebook plugin

Created the Facebook plugin that can post comments to questions asked
through Facebook.
created answerManager unit test
Facebook service - Added postId to web request
- service test folder added
Merge remote-tracking branch 'upstream/master'
Merge pull request #52 from teugis/master

Added avatar, last changed time and fixed folder structure in data layer.
Added integration tests for FeedbackService.
Removed unnecessary includes.
Merge pull request #54 from jorisvervuurt/master

Added integration tests for FeedbackService.
Fixed use of includes.
Sorted usings.
Added integraton tests and fixed includes for UserManager
Updated class summary.
answer manager service integration tests

- added integration test
- fixed optional parameters getAnswers method
- minor typo fix
Merge pull request #55 from jorisvervuurt/master

Added integration tests for UserManager, bugfixes in FeedbackManager and UserManager.
Created separate class that will contain additional tests.
Added integration tests for creating and matching a user based on OpenIDUserInfo,