Add Grantee Information

[mbeyers]

On the Steering Committee call today, it came up that multiple grantees may be contributing to a specific study. For tracking purposes, it will be useful and necessary to associate grants with studies. There will be a need for multiple grantees associated with a specific study (Glioma, for example, has at least 3 grantees associated with it). For each grant, there is an associated PI, Grant Number and Location which should be tracked. These locations may show up in the study itself as sites (see Glioma which has samples from the site Texas A&M University (TAMU) with associated Grantees - Amy Heimberger and Jonathan Levine).

[mbeyers]

Also, the type of grant needs to be a property - R01, P30, etc. so that users (maybe NCI) can look up studies based on grant type. This may necessitate a separate node for Grant associated with the StudySite.