Use Guava 17.0 to overcome the problem with CDI

wicket/pom.xml

@@ -40,6 +40,12 @@
 			<version>${bonecp.version}</version>
 		</dependency>
 
+		<dependency>
+			<groupId>com.google.guava</groupId>
+			<artifactId>guava</artifactId>
+			<version>17.0</version>
+		</dependency>
+
 		<!-- LOGGING DEPENDENCIES - LOG4J -->
 		<dependency>
 			<groupId>org.slf4j</groupId>