Make the Template Feature available in the WS API

We are building features into the COmanage UI to enable simple users with the ability to see Grouper Groups they are part of and join or leave those they have the ability Optin-Optout of.

We would also like to enable folks with minor admin authZ such as Working Group chairs etc. be able to create Groups to support their collaborations.  Such groups would coincide with email lists, wiki spaces, Jira projects, etc.  Using Templates to build multi-group collaborations would make this a much simpler activity in the UI and provide consistency in the way these collaborations are created.