Enabled some typed Titan properties (Fixes #4).

These type-related issues were fixed in Titan 0.3.1, see
thinkaurelius/titan#222.
Merge branch 'titan-0.3.1' (Fixes #4). Included other minor changes.

Conflicts:
	Solution/Fabric.Db.Data/Setups/SetupIndexes.cs
	Solution/Fabric.Db.Data/Setups/SetupIndexes.tt
	Solution/Fabric.Domain.Meta/SchemaHelperProp.cs
	Solution/Fabric.Infrastructure/Api/ApiDataAccess.cs

All conflicts were resolved.  All 571u, 340i tests pass.