add currency and interest rate to savings

mifosng-db/0001a-mifos-platform-base-ddl-schema.sql

@@ -287,6 +287,9 @@ CREATE TABLE `portfolio_product_savings` (
   `id` bigint(20) NOT NULL AUTO_INCREMENT,
   `name` varchar(100) NOT NULL,
   `description` varchar(500) DEFAULT NULL,
+  `currency_code` varchar(3) NOT NULL,
+  `currency_digits` smallint(5) NOT NULL,
+  `interest_rate` decimal(19,6) NOT NULL,
   `createdby_id` bigint(20) DEFAULT NULL,
   `created_date` datetime DEFAULT NULL,
   `lastmodified_date` datetime DEFAULT NULL,

mifosng-db/patches/patch-0002_AddCurrencyInterestFieldsSavingsProduct.sql

@@ -0,0 +1,4 @@
+ALTER TABLE `portfolio_product_savings` 
+ADD COLUMN `currency_code` VARCHAR(3) NULL  AFTER `description` , 
+ADD COLUMN `currency_digits` SMALLINT(5) NULL  AFTER `currency_code` , 
+ADD COLUMN `interest_rate` DECIMAL(19,6) NULL  AFTER `currency_digits` ;