Converted TextPropertyPanel to use this new functionality.

(cherry picked from commit 5e32abe4)

Conflicts:
	officecfg/registry/data/org/openoffice/Office/UI/GenericCommands.xcu
	sfx2/inc/sfx2/sidebar/ControllerItem.hxx
	sfx2/source/sidebar/ControllerItem.cxx
	sfx2/source/sidebar/FocusManager.cxx
	sfx2/source/sidebar/SidebarChildWindow.cxx
	svx/Library_svx.mk
	svx/source/sidebar/text/TextPropertyPanel.cxx
	svx/source/sidebar/text/TextPropertyPanel.hrc
	svx/source/sidebar/text/TextPropertyPanel.hxx
	svx/source/sidebar/text/TextPropertyPanel.src
	svx/source/sidebar/text/TextUnderlineControl.hxx

Change-Id: I3a25bb0a02e6165ceeb6dbd9e6ecd3e94051f594