Some GUI style fixes

applications/gui2/src/modules/addsource.cpp

@@ -4,6 +4,7 @@ using ftl::gui2::AddCtrl;
 
 void AddCtrl::init() {
 	button = screen->addButton(ENTYPO_ICON_PLUS);
+	button->setTooltip("Add New Source");
 	button->setCallback([this](){
 		button->setPushed(false);
 		show();

applications/gui2/src/modules/calibration/calibration.cpp

@@ -238,6 +238,7 @@ void Calibration::init() {
 
 	auto button = screen->addButton<ftl::gui2::PopupButton>("", ENTYPO_ICON_CAMERA);
 	button->setChevronIcon(0);
+	button->setTooltip("Calibrate Cameras");
 
 	auto* popup = button->popup();
 	popup->setLayout(new nanogui::BoxLayout

applications/gui2/src/modules/config.cpp

@@ -4,6 +4,7 @@ using ftl::gui2::ConfigCtrl;
 
 void ConfigCtrl::init() {
 	button = screen->addButton(ENTYPO_ICON_COG);
+	button->setTooltip("Settings");
 	button->setCallback([this](){
 		button->setPushed(false);
 		show();

applications/gui2/src/modules/statistics.cpp

@@ -41,6 +41,7 @@ void Statistics::init() {
 	widget = new ftl::gui2::StatisticsWidget(screen, this);
 	widget->setVisible(value("visible", false));
 	auto button = screen->addButton(ENTYPO_ICON_INFO);
+	button->setTooltip("Show Information");
 	button->setCallback([this, button](){
 		button->setPushed(false);
 		widget->setVisible(!widget->visible());

applications/gui2/src/modules/thumbnails.cpp

@@ -12,6 +12,7 @@ using ftl::gui2::ThumbnailsController;
 
 void ThumbnailsController::init() {
 	auto button = screen->addButton(ENTYPO_ICON_HOME);
+	button->setTooltip("Home");
 	button->setCallback([this, button](){
 		button->setPushed(false);
 		activate();

applications/gui2/src/views/config.cpp

@@ -41,6 +41,7 @@ private:
 				}
 			}
 			previous = str;
+			screen()->performLayout();
 		}
 	}