changed dependency for gwt adding ${gwtVersion} at 2.7.0

git-svn-id: http://svn.d4science-ii.research-infrastructures.eu/gcube/trunk/portlets/user/workspace-tree-widget@129412 82a268e6-3cf1-43bd-a215-b396298e98cf

pom.xml

@@ -66,13 +66,14 @@
 		<dependency>
 			<groupId>com.google.gwt</groupId>
 			<artifactId>gwt-user</artifactId>
+			<version>${gwtVersion}</version>
 			<scope>provided</scope>
 		</dependency>
 
 		<dependency>
 			<groupId>com.sencha.gxt</groupId>
 			<artifactId>gxt2.2.5-gwt2.X</artifactId>
-			<version>2.7.0</version>
+			<version>${gwtVersion}</version>
 			<scope>compile</scope>
 		</dependency>