fixed missing persistence xml

pom.xml

@@ -5,7 +5,7 @@
 	<artifactId>imixs-admin</artifactId>
 	<packaging>war</packaging>
 	<name>Imixs Workflow Web Admin Tool</name>
-	<version>4.2.2</version>
+	<version>4.2.1</version>
 	<description>Imixs Workflow Web Admin Tool</description>
 	<url>http://www.imixs.org/websites/imixs-org.nsf/chapter/api</url>
 	<organization>

src/main/webapp/WEB-INF/META-INF/persistence.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<persistence version="1.0"
+	xmlns="http://java.sun.com/xml/ns/persistence">
+
+
+	<!-- empty persistnece.xml needed for DocumenSerivce  -->
+	<!-- eclipselink -->
+	<persistence-unit name="org.imixs.workflow.jee.jpa">
+		<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
+	</persistence-unit>
+
+
+
+</persistence>