added spring expression dependency to maven pom

Author: Keith Donald

org.springframework.web.servlet/pom.xml

@@ -181,6 +181,12 @@
 			<version>${project.version}</version>
 			<scope>compile</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-expression</artifactId>
+			<version>${project.version}</version>
+			<scope>compile</scope>
+		</dependency>		
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-oxm</artifactId>