Fix superuser template functions

Superuser functions were overriding their user/org parameters with the
values from the database/role, so the user was incorrect.

client/renderer/sql-template-renderer

@@ -17,7 +17,7 @@ class SqlTemplateRenderer
   end
 
   def render
-    ERB.new(@template).result(binding)
+    ERB.new(@template, _save_level=nil, _trim_mode='-').result(binding)
   end
 
   def name

client/renderer/templates/20_public_functions.erb

@@ -13,7 +13,7 @@ BEGIN
   IF session_user = 'publicuser' OR session_user ~ 'cartodb_publicuser_*' THEN
     RAISE EXCEPTION 'The api_key must be provided';
   END IF;
-  SELECT u, o INTO username, orgname FROM <%= DATASERVICES_CLIENT_SCHEMA %>._cdb_entity_config() AS (u text, o text);
+  <% unless superuser_function? -%>SELECT u, o INTO username, orgname FROM <%= DATASERVICES_CLIENT_SCHEMA %>._cdb_entity_config() AS (u text, o text);<% end %>
   -- JSON value stored "" is taken as literal
   IF username IS NULL OR username = '' OR username = '""' THEN
     RAISE EXCEPTION 'Username is a mandatory argument, check it out';

client/renderer/templates/25_exception_safe_private_functions.erb

@@ -14,7 +14,7 @@ BEGIN
   IF session_user = 'publicuser' OR session_user ~ 'cartodb_publicuser_*' THEN
     RAISE EXCEPTION 'The api_key must be provided';
   END IF;
-  SELECT u, o INTO username, orgname FROM <%= DATASERVICES_CLIENT_SCHEMA %>._cdb_entity_config() AS (u text, o text);
+  <% unless superuser_function? -%>SELECT u, o INTO username, orgname FROM <%= DATASERVICES_CLIENT_SCHEMA %>._cdb_entity_config() AS (u text, o text);<% end %>
   -- JSON value stored "" is taken as literal
   IF username IS NULL OR username = '' OR username = '""' THEN
     RAISE EXCEPTION 'Username is a mandatory argument, check it out';