ItEr08S10CreacionEntidadesServidorCriterios: Add dependency to commons-lang.

It will be used for checking preconditions.

navalplanner-business/pom.xml

@@ -49,6 +49,10 @@
             <groupId>org.hibernate</groupId>
             <artifactId>hibernate-annotations</artifactId>
 		</dependency>
+		<dependency>
+            <groupId>commons-lang</groupId>
+            <artifactId>commons-lang</artifactId>
+        </dependency>
     </dependencies>
 
 </project>

pom.xml

@@ -215,6 +215,12 @@
                 <artifactId>spring-test</artifactId>
                 <version>2.5.6</version>
                 <scope>test</scope>
+            </dependency>
+			<!-- Commons lang-->
+            <dependency>
+                <groupId>commons-lang</groupId>
+                <artifactId>commons-lang</artifactId>
+                <version>2.4</version>
             </dependency>
             <!-- Commons Logging (required by many frameworks)-->
             <dependency>