Move advanced search dialog into search result pane.

Move advanced search dialog into search result pane.

And move the cancel button into the specific search result widget.

Change-Id: Ide8173e1ec5de091e1c1332a2b0c47d9a30a4c87
Reviewed-on: http://codereview.qt-project.org/4555
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Leandro T. C. Melo <leandro.melo@nokia.com>
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>