queries updated for RavenDB 2.0

exception in RavenDB 2 when trying to query by ID, when an alternative
Load() by ID can be used
Merge pull request #41 from paolosanchi/master

Fix and features
Merge pull request #37 from mhrovatic/master

Queries updated for RavenDB 2
implemented DisplayFor

+ fix getNonNullableModelType
Merge branch 'master' of git://github.com/jgauffin/griffin.mvccontrib