src: Project Refactoring

* Added language specific Project and ProjectSettings
* moved project specific code from Application to Project
* made Application a singleton
* added handleDialog method to Application which displays a dialog window and waits for user input
* Added ScopedFunctor that executes a function when deleted

src/lib/data/SqliteStorage.cpp

@@ -11,7 +11,7 @@
 #include "utility/utilityString.h"
 #include "utility/Version.h"
 
-const size_t SqliteStorage::STORAGE_VERSION = 2;
+const size_t SqliteStorage::STORAGE_VERSION = 3;
 
 SqliteStorage::SqliteStorage(const FilePath& dbFilePath)
 	: m_dbFilePath(dbFilePath)
@@ -90,6 +90,16 @@ bool SqliteStorage::isIncompatible() const
 	return false;
 }
 
+std::string SqliteStorage::getProjectSettingsText() const
+{
+	return getMetaValue("project_settings");
+}
+
+void SqliteStorage::setProjectSettingsText(std::string text)
+{
+	insertOrUpdateMetaValue("project_settings", text);
+}
+
 void SqliteStorage::setVersion()
 {
 	setStorageVersion();