data: database storage

* replaced storage by a new version that utilizes sqlite for persistence.
* added SqliteStorage to manage direct access to the database.
* added testsuit for sqlite.
* slimmed down the protected interface of the storage.
* changed tests in StorageTestSuit to avoid using protected methods of the storage.
* added functions to begin and commit a transaction to the storage.
* removed GraphFilterTestSuite.
* removed GraphFilterConductorTestSuite.
* added Node and Edge constructor that takes id as parameter
* added constructor for TokenComponentNameCached that accepts NameHierarchy as parameter
* added TokenLocation constructor that takes locationId as parameter.
* created respective construction functions in TokenLocatonLine, -File and -Collection.

fortune cookie message = Recognition will come from unexpected sources.

src/lib/data/graph/token_component/TokenComponentName.h

@@ -4,6 +4,7 @@
 #include <string>
 
 #include "data/graph/token_component/TokenComponent.h"
+#include "data/name/NameHierarchy.h"
 #include "data/search/SearchNode.h"
 
 class TokenComponentName
@@ -46,6 +47,7 @@ class TokenComponentNameCached
 {
 public:
 	TokenComponentNameCached(const std::vector<std::string>& nameHierarchy);
+	TokenComponentNameCached(const NameHierarchy& nameHierarchy);
 	virtual ~TokenComponentNameCached();
 
 	virtual std::shared_ptr<TokenComponent> copy() const;
@@ -56,7 +58,7 @@ public:
 	virtual const SearchNode* getSearchNode() const;
 
 private:
-	const std::vector<std::string> m_nameHierarchy;
+	std::vector<std::string> m_nameHierarchy; // TODO: use const NameHierarchy here
 };
 
 #endif // TOKEN_COMPONENT_NAME_H