ui: diverse improvements before release

* hide build file content
* use small buttons in all windows
* new design for start screen
* fixed design for enter license ui
* added spacing to summary
* brighter icons in wizzard
* added template icon for graph
* smoothing for graph icons
* switched error icon to dot
* fixed error message tooltip immediatly disappearing
* menu item for opening documentation

src/lib_gui/qt/element/QtCodeArea.cpp

@@ -496,10 +496,10 @@ void QtCodeArea::mouseMoveEvent(QMouseEvent* event)
 		}
 	}
 
-	QToolTip::hideText();
-
 	if (!same)
 	{
+		QToolTip::hideText();
+
 		setHoveredAnnotations(annotations);
 
 		const std::vector<std::string>& errorMessages = m_fileWidget->getErrorMessages();

src/lib_gui/qt/element/QtStatusBar.cpp

@@ -26,11 +26,12 @@ QtStatusBar::QtStatusBar()
 
 	m_errorButton.hide();
 	m_errorButton.setFlat(true);
+	m_errorButton.setAttribute(Qt::WA_LayoutUsesWidgetRect); // fixes layouting on Mac
 	m_errorButton.setStyleSheet("QPushButton { color: #D00000; margin-right: 0; spacing: none; }");
 	m_errorButton.setIcon(utility::colorizePixmap(
-		QPixmap((ResourcePaths::getGuiPath() + "statusbar_view/octagon.png").c_str()),
+		QPixmap((ResourcePaths::getGuiPath() + "statusbar_view/dot.png").c_str()),
 		"#D00000"
-	).scaledToHeight(10));
+	).scaledToHeight(12));
 	addPermanentWidget(&m_errorButton);
 
 	connect(&m_errorButton, SIGNAL(clicked()), this, SLOT(showErrors()));