Ability to check fundamental solution and project integrity.

This change enables the fundamental solution and project integrity checking functionality on deputy.

The functionality from old Nant task has been ported over completely. Event more, minor issues on reference checking have been resolved. The all new CLI interface is at service. Checking a solution is as easy as

    deputy -c solution -s C:\Code\cool\solution.sln

The deputy library can be considered feature complete for the most basic checks. Please review this pull thoroughly and let me know about your findings / comments.

If you feel happy, please merge to develop / master.