data: parse partial template specializations

* fixed: implicit template specializations will be found even if the original template definition is located in a different file (that gets included).
* implemented correct extraction of template parameters, template arguments and template specialization edges.
* added token locations for template parameters of partial template specializations.
* graph view displays full names of template parameters and template arguments.
* added test code for features

src/lib/data/search/SearchNode.h

@@ -23,6 +23,7 @@ public:
 	~SearchNode();
 
 	const std::string& getName() const;
+	std::vector<std::string> getNameHierarchy() const;
 	std::string getFullName() const;
 
 	Id getNameId() const;