Update sip bindings, add method documentation

Author: manisandro

python/core/composer/qgscomposerhtml.sip

@@ -192,6 +192,9 @@ class QgsComposerHtml: QgsComposerMultiFrame
      */
     void loadHtml();
 
+    /**Recalculates the frame sizes for the current viewport dimensions*/
+    void recalculateFrameSizes();
+
     void refreshExpressionContext();
 
     virtual void refreshDataDefinedProperty( const QgsComposerObject::DataDefinedProperty property = QgsComposerObject::AllProperties );

src/core/composer/qgscomposerhtml.h

@@ -214,6 +214,8 @@ class CORE_EXPORT QgsComposerHtml: public QgsComposerMultiFrame
      * @see url
      */
     void loadHtml();
+
+    /**Recalculates the frame sizes for the current viewport dimensions*/
     void recalculateFrameSizes();
     void refreshExpressionContext();