Fix wrong type of series_sales.{first,second}_price fields.

CURRENCY pseudo-type in Liquibase was translated into decimal(10,0) type in MySQL. Unfortunately it
doesn't allow to provide fraction part. In other words, before wasn't possible to specify price
2.8 because it was rounded to 3.

Fix #461

Author: php-coder

src/main/resources/liquibase/version/0.4.xml

@@ -17,5 +17,6 @@
 	<include file="0.4/2016-07-22--unique_slug_in_categories.xml" relativeToChangelogFile="true" />
 	<include file="0.4/2016-08-18--unique_slug_in_collections.xml" relativeToChangelogFile="true" />
 	<include file="0.4/2016-08-22--series_sales.xml" relativeToChangelogFile="true" />
+	<include file="0.4/2016-08-27--fix_series_sales_price.xml" relativeToChangelogFile="true" />
 
 </databaseChangeLog>

src/main/resources/liquibase/version/0.4/2016-08-27--fix_series_sales_price.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<databaseChangeLog
+	xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
+		http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.0.xsd">
+	
+	<changeSet id="modify-first_price-type" author="php-coder" context="scheme">
+		<modifyDataType tableName="series_sales" columnName="first_price" newDataType="DECIMAL(19,2)" />
+	</changeSet>
+	
+	<changeSet id="modify-second_price-type" author="php-coder" context="scheme">
+		<modifyDataType tableName="series_sales" columnName="second_price" newDataType="DECIMAL(19,2)" />
+	</changeSet>
+	
+</databaseChangeLog>