Add displayable column to analysis description.

sql/patch_40_41_a.sql

+# patch_40_41_a
+#
+# title: analysis_description.displayable
+#
+# description:
+# Add displayable column to analysis_description
+
+ALTER TABLE analysis_description ADD COLUMN displayable BOOLEAN DEFAULT 1 NOT NULL;
+
+# patch identifier
+INSERT INTO meta (meta_key, meta_value) VALUES ('patch', 'patch_40_41_a.sql|analysis_description_displayable');
+