Add Comment types
User organization editor

SU's can now edit a user's organization.  Adding an organization
automatically adds the Network role.  Setting the org to no-org(0)
automatically removes the Network role.
Improvements post code-review

* constants are constant
* database stores either 1..N or null for organization
* development version of underscore included
Rename All to Public for clarity
Comment Get/Set based on roles

Add and Get comments based on user roles
Test for comment accesibility
Update unit test mappings
Test config are now in build repo
Merge branch 'master' of github.com:azavea/UrbanInstitute-DCPreservation