Include <sfx2/sidebar/Tools.hxx> for A2S

It is included in the precompiled svx header, so have to include it
explicitly too for A2S to be visible in the non-pch case.

Change-Id: Ic90272699979001645b42eebba9bb27dce2b7022

svx/source/sidebar/PanelFactory.cxx

@@ -30,6 +30,7 @@
 #include "debug/NotYetImplementedPanel.hxx"
 #include "EmptyPanel.hxx"
 #include <sfx2/sidebar/SidebarPanelBase.hxx>
+#include <sfx2/sidebar/Tools.hxx>
 #include <sfx2/sfxbasecontroller.hxx>
 #include <sfx2/templdlg.hxx>
 #include <toolkit/helper/vclunohelper.hxx>