task: add hidden field to series_images table.

Part of #1356

Author: php-coder

Diff for: src/main/resources/liquibase/version/0.4.4.xml

@@ -5,6 +5,6 @@
 	xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
 		http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd">
 
-	
+	<include file="0.4.4/2020-05-02--hidden_series_images.xml" relativeToChangelogFile="true" />
 
 </databaseChangeLog>

Diff for: src/main/resources/liquibase/version/0.4.4/2020-05-02--hidden_series_images.xml

@@ -0,0 +1,18 @@
+<?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-3.1.xsd">
+	
+	<changeSet id="add-hidden-field-to-series_images" author="php-coder" context="scheme">
+		
+		<addColumn tableName="series_images">
+			<column name="hidden" type="BOOLEAN" defaultValueBoolean="false">
+				<constraints nullable="false" />
+			</column>
+		</addColumn>
+		
+	</changeSet>
+	
+</databaseChangeLog>

Diff for: src/main/resources/sql/image_dao_queries.properties

@@ -3,10 +3,12 @@ INSERT \
   INTO series_images \
      ( series_id \
      , image_id \
+     , hidden \
      ) \
 VALUES \
      ( :series_id \
      , :image_id \
+     , FALSE \
      )
 
 series_image.find_by_series_id = \