data: increased file clearing performance

This change passes all file node ids for clearing to the sqlite storage at once and makes use of ON DELETE CASCADE for
everything else, instead of manally deleting all source locations.

src/lib/data/TaskCleanStorage.h

@@ -1,8 +1,7 @@
 #ifndef TASK_CLEAN_STORAGE_H
 #define TASK_CLEAN_STORAGE_H
 
-#include <queue>
-#include <set>
+#include <vector>
 
 #include "utility/file/FilePath.h"
 #include "utility/scheduling/Task.h"
@@ -16,7 +15,7 @@ class TaskCleanStorage
 public:
 	TaskCleanStorage(
 		Storage* storage,
-		const std::set<FilePath>& filePaths
+		const std::vector<FilePath>& filePaths
 	);
 
 	virtual void enter();
@@ -28,7 +27,7 @@ public:
 
 private:
 	Storage* m_storage;
-	std::queue<FilePath> m_filePaths;
+	std::vector<FilePath> m_filePaths;
 	const size_t m_fileCount;
 
 	utility::TimePoint m_start;