listing valid authority types

Signed-off-by: Chris Cormack <crc@liblime.com>

installer/data/en/mandatory/auth-types.txt

@@ -1 +1,11 @@
-Default authority types - This SQL MUST be inserted before marc authorities structure!
+Default MARC21 Standard Authority types:
+
+	Personal Name 
+	Corporate Name 
+	Meeting Name 
+	Uniform Title 
+	Chronological Term 
+	Topical Term 
+	Geographic Name 
+	Genre/Form Term 
+