No auth

Adds functionality to use no authentication for all requests by setting authorization = None within the config file, or for specific IP addresses or domain names by setting authorization = virtual_host.

Closes #6 (closed)

config/gwdatafind-server.ini

@@ -34,9 +34,11 @@ scitokens_audience = ANY
 # SciTokens Scope
 scitokens_scope = "read:/frames"
 
-# authorization must be one of 'None', 'grid-mapfile', or 'virtual_host'
+# authorization must be one of 'None' or 'virtual_host', or a combination
+# of 'grid-mapfile' and/or 'scitoken' with comma seperation.
 # None does not authenticate users querying the server.
 # grid-mapfile checks if the user's subject has an entry in a grid-mapfile
+# scitoken uses a SciToken for authorisation.
 # virtual_host allows for different authorization settings on different
 # virtual hosts on the same machine. These are controlled in subsections
 # below labeled by the IP address of each virtual host.