Remove "FabType" Index Usage

[zachkinstner]

The changes from #16 removed the "FabType" index. There are a few cases in the code where this index is still used.

The following tests show matches for g.V('"+PropDbName.Node_FabType:

• FabApiModify\Tasks\TGetUrlByAbsoluteUrl.cs
• FabApiOauth\Tasks\TGetAccessToken.cs
• FabApiOauth\Tasks\TGetGrant.cs
• FabApiOauth\Tasks\TGetRefresh.cs
• FabApiOauth\Tasks\TGetUserAuth.cs
• FabApiWeb\Tasks\TGetAppByName.cs
• FabApiWeb\Tasks\TGetUserByName.cs

[zachkinstner]

Possible ways to resolve these:

• Start the query from a different node's index
• Use an existing ElasticSearch index
• Create a new Titan/ElasticSearch index

[zachkinstner]

Remove the ApiFunc.NewPathFromType function, which leads to "FabType" index usage.

[zachkinstner]

Fabric no longer uses (or indexes) FabType.