Change Event->Cause to a TEXT instead of varchar(32) because we now inclue Alarmed Zone name and could include other info as well.

Fixes #3403

db/zm_create.sql.in

@@ -188,7 +188,7 @@ CREATE TABLE `Events` (
   `StorageId`	smallint(5) unsigned default 0,
   `SecondaryStorageId`	smallint(5) unsigned default 0,
   `Name` varchar(64) NOT NULL default '',
-  `Cause` varchar(32) NOT NULL default '',
+  `Cause` TEXT,
   `StartDateTime` datetime default NULL,
   `EndDateTime` datetime default NULL,
   `Width` smallint(5) unsigned NOT NULL default '0',

db/zm_update-1.37.7.sql

@@ -0,0 +1,2 @@
+/* Change Cause from varchar(32) to TEXT.  We now include alarmed zone name */
+ALTER TABLE `Events` MODIFY `Cause` TEXT;