Re-enabled mgrast auth to run simultaneously with globus auth.
Checking the token actually has the string "globus" before validating token with globus online.
Refactored mgrast auth plug-in to work with current setup.
Added mgrast auth url to server config template.
Merge pull request #332 from jaredbischof/master

Refactored mgrast auth plug-in to work with current setup.