logic: More fixes for release

* Fixed crash on undoing aggregation edge
* Avoid mutex locking in logging classes when logging is disabled
* Readded dark color scheme
* Fixed font size of type label in autocompletion list
* Fixed text drawing in autocompletion list
* Only give camelcase score when no noletter score was given
* Added MessageShowErrors to undo stack
* Select error line in table when undoing MessageShowErrors
* Notify user about new Plugin in description of From Visual Studio project setup
* Fixed row height of Project File Location label in project setup

src/lib/utility/logging/LogManager.cpp

@@ -4,9 +4,8 @@
 
 #include "utility/logging/LogMessage.h"
 
-std::shared_ptr<LogManager> LogManager::getInstance()
+std::shared_ptr<LogManager> LogManager::createInstance()
 {
-	std::lock_guard<std::mutex> lockGuard(s_instanceMutex);
 	if (s_instance.use_count() == 0)
 	{
 		s_instance = std::shared_ptr<LogManager>(new LogManager());
@@ -14,9 +13,13 @@ std::shared_ptr<LogManager> LogManager::getInstance()
 	return s_instance;
 }
 
+std::shared_ptr<LogManager> LogManager::getInstance()
+{
+	return s_instance;
+}
+
 void LogManager::destroyInstance()
 {
-	std::lock_guard<std::mutex> lockGuard(s_instanceMutex);
 	s_instance.reset();
 }
 
@@ -24,6 +27,11 @@ LogManager::~LogManager()
 {
 }
 
+void LogManager::setLoggingEnabled(bool enabled)
+{
+	m_loggingEnabled = enabled;
+}
+
 void LogManager::addLogger(std::shared_ptr<Logger> logger)
 {
 	m_logManagerImplementation.addLogger(logger);
@@ -56,7 +64,10 @@ void LogManager::logInfo(
 	const unsigned int line
 )
 {
-	m_logManagerImplementation.logInfo(message, file, function, line);
+	if (m_loggingEnabled)
+	{
+		m_logManagerImplementation.logInfo(message, file, function, line);
+	}
 }
 
 void LogManager::logWarning(
@@ -66,7 +77,10 @@ void LogManager::logWarning(
 	const unsigned int line
 )
 {
-	m_logManagerImplementation.logWarning(message, file, function, line);
+	if (m_loggingEnabled)
+	{
+		m_logManagerImplementation.logWarning(message, file, function, line);
+	}
 }
 
 void LogManager::logError(
@@ -76,12 +90,15 @@ void LogManager::logError(
 	const unsigned int line
 )
 {
-	m_logManagerImplementation.logError(message, file, function, line);
+	if (m_loggingEnabled)
+	{
+		m_logManagerImplementation.logError(message, file, function, line);
+	}
 }
 
 std::shared_ptr<LogManager> LogManager::s_instance;
-std::mutex LogManager::s_instanceMutex;
 
 LogManager::LogManager()
+	: m_loggingEnabled(false)
 {
 }

src/lib/utility/logging/LogManager.h

@@ -2,7 +2,6 @@
 #define LOG_MANAGER_H
 
 #include <memory>
-#include <mutex>
 
 #include "utility/logging/Logger.h"
 #include "utility/logging/LogManagerImplementation.h"
@@ -10,11 +9,14 @@
 class LogManager
 {
 public:
+	static std::shared_ptr<LogManager> createInstance();
 	static std::shared_ptr<LogManager> getInstance();
 	static void destroyInstance();
 
 	~LogManager();
 
+	void setLoggingEnabled(bool enabled);
+
 	void addLogger(std::shared_ptr<Logger> logger);
 	void removeLogger(std::shared_ptr<Logger> logger);
 	void removeLoggersByType(const std::string& type);
@@ -42,13 +44,13 @@ public:
 
 private:
 	static std::shared_ptr<LogManager> s_instance;
-	static std::mutex s_instanceMutex;
 
 	LogManager();
 	LogManager(const LogManager&);
 	void operator=(const LogManager&);
 
 	LogManagerImplementation m_logManagerImplementation;
+	bool m_loggingEnabled;
 };
 
 #endif // LOG_MANAGER_H

src/lib/utility/messaging/type/MessageActivateEdge.h

@@ -17,7 +17,10 @@ public:
 		, fromNameHierarchy(fromName)
 		, toNameHierarchy(toName)
 	{
-		setKeepContent(true);
+		if (!isAggregation())
+		{
+			setKeepContent(true);
+		}
 	}
 
 	static const std::string getStaticType()

src/lib/utility/solution/SolutionParserVisualStudio.cpp

@@ -270,7 +270,10 @@ std::string SolutionParserVisualStudio::getButtonText() const
 
 std::string SolutionParserVisualStudio::getDescription() const
 {
-	return "Create a new project from an existing Visual Studio Solution file. <b>Unstable!</b>";
+	return "Create a new project from an existing Visual Studio Solution file. "
+		"<b>Unstable: Please install our new <a href=\"https://coati.io/documentation/index.html#VisualStudio\">Visual "
+		"Studio plugin</a> and use the \"Create CDB\" menu option, then continue with project setup from "
+		"Compilation Database.</b>";
 }
 
 std::string SolutionParserVisualStudio::getIconPath() const