[releng] fixed since tags in GraphContainer & GraphConnection (#304)

Author: azoitl

org.eclipse.zest.core/src/org/eclipse/zest/core/widgets/GraphConnection.java

@@ -104,7 +104,7 @@ public GraphConnection(Graph graphModel, int style, GraphNode source, GraphNode
 	}
 
 	/**
-	 * @since 1.9
+	 * @since 1.10
 	 */
 	public void registerConnection(GraphNode source, GraphNode destination) {
 		if (source.getSourceConnections().contains(this)) {

org.eclipse.zest.core/src/org/eclipse/zest/core/widgets/GraphContainer.java

@@ -541,15 +541,15 @@ public void setLayoutAlgorithm(LayoutAlgorithm algorithm, boolean applyLayout) {
 	}
 
 	/**
-	 * @since 1.9
+	 * @since 1.10
 	 */
 	public LayoutAlgorithm getLayoutAlgorithm() {
 		return this.layoutAlgorithm;
 	}
 
 	@Override
 	public void applyLayout() {
-		if ((this.getNodes().size() == 0)) {
+		if ((this.getNodes().isEmpty())) {
 			return;
 		}