Jarlssen_ChooserWidget - module declaration and dependencies

module declaration and dependencies.xml

<?xml version="1.0"?>
<config>
    <modules>
        <My_CustomExtension>
            <active>true</active>
            <codePool>local</codePool>
            <depends>
                <Jarlssen_ChooserWidget/>
            </depends>
        </My_CustomExtension>
    </modules>
</config>