Use std::shared_ptr instead of boost::shared_ptr

etc/doxygen/snippets/ArmarXGuiPluginWidgetController.h.dox

source/ArmarXGui/applications/ArmarXGui/ArmarXGuiApp.h

source/ArmarXGui/applications/ArmarXGui/ArmarXMainWindow.h

...ce/ArmarXGui/gui-plugins/ConditionViewerPlugin/TermNode.h

...ce/ArmarXGui/gui-plugins/ConditionViewerPlugin/TreeNode.h

...s/ConditionViewerPlugin/widgets/ConditionViewerWidget.cpp

source/ArmarXGui/gui-plugins/PlotterPlugin/ArmarXPlotter.h

...plugins/ScenarioManager/ScenarioManagerWidgetController.h

...cenarioManager/controller/ApplicationDatabaseController.h

...cenarioManager/controller/DetailedApplicationController.h

...ugins/ScenarioManager/controller/ScenarioListController.h

...ui-plugins/ScenarioManager/gui/applicationdatabasemodel.h

...gui-plugins/ScenarioManager/gui/applicationdatabaseview.h

...i-plugins/ScenarioManager/gui/detailedapplicationview.cpp

...gui-plugins/ScenarioManager/gui/detailedapplicationview.h

...arioManager/gui/filterabletreemodelsortfilterproxymodel.h

...rXGui/gui-plugins/ScenarioManager/gui/openscenariomodel.h

...arXGui/gui-plugins/ScenarioManager/gui/scenariolistview.h

...ArmarXGui/gui-plugins/ScenarioManager/gui/scenariomodel.h

...ArmarXGui/gui-plugins/ScenarioManager/gui/settingsmodel.h