WS SCIM 2 to implement /Schemas endpoint

The /Schemas endpoint hasn't yet been implemented in the WS Scim solution. It was not working in the Penn State implementation either (nested fields were referencing their parents, so the was an infinite loop that crashed the stack)

• /scim/v2/Schemas/{resourceType} should return a schema object defining the attributes for a schema
• /scim/v2/Schemas should return a json array for User, Group, Membership, TierMetaExtension, TierGroupExtension