Associativy projects updated to Visual Studio 2012 and Orchard 1.6

Tags: update, Visual Studio 2012, Orchard 1.6

All the Associativy modules' project files were updated to the Visual Studio 2012 project file format (don't worry if you're using 2010 still: it's backwards compatible).

Also the main Associativy dev solution was updated to Orchard 1.6 (or even to a younger changeset fixing dynamic compilation).

All in all everything is now latest and greatest :-).