Move the validation code into a PCL.

commit 5583716bc39cbe9441c513f3aab976be678c8db1
Author: Tom Opgenorth <tom@opgenorth.net>
Date:   Thu Sep 11 16:51:45 2014 -0600

    Move the validation logic into it's own PCL project.
Fix up the "start" project and add some icons.
Add icons for the Android project.
Use the Common project for validator.
Fix typo in directory names.
Use the validation logic in the PCL library.
delete a dead directory.