src: storage refactoring

* renamed Storage to PersistentStorage
* added Storage as baseclass that implements data injection
* cleaned ParserClient interface
* added default constructors for storage types
* cleaned SqlteStorage by implementing the private getAll methods as template specializations
* added CXX flags to CMakeLists (this is needed for sqlite with visual studio)
* removed TestStorage.h/.cpp since these files were not used anymore.

src/lib/data/TaskCleanStorage.h

@@ -7,14 +7,14 @@
 #include "utility/scheduling/Task.h"
 #include "utility/TimePoint.h"
 
-class Storage;
+class PersistentStorage;
 
 class TaskCleanStorage
 	: public Task
 {
 public:
 	TaskCleanStorage(
-		Storage* storage,
+		PersistentStorage* storage,
 		const std::vector<FilePath>& filePaths
 	);
 
@@ -26,7 +26,7 @@ public:
 	virtual void revert();
 
 private:
-	Storage* m_storage;
+	PersistentStorage* m_storage;
 	std::vector<FilePath> m_filePaths;
 	const size_t m_fileCount;