Update relocated dependencies

Fixes the Maven warnings:

    [WARNING] The artifact poi:poi:jar:2.5.1 has been relocated to
        poi:poi:jar:2.5.1-final-20040804
    [WARNING] The artifact itext:itext:jar:1.3 has been relocated to
        com.lowagie:itext:jar:1.3

commons/pom.xml

@@ -101,7 +101,7 @@
 		<dependency>
 			<groupId>poi</groupId>
 			<artifactId>poi</artifactId>
-			<version>2.5.1</version>
+			<version>2.5.1-final-20040804</version>
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
@@ -111,7 +111,7 @@
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
-			<groupId>itext</groupId>
+			<groupId>com.lowagie</groupId>
 			<artifactId>itext</artifactId>
 			<version>1.3</version>
 			<scope>compile</scope>