data: name hierarchy refactoring

* replaced typenames (which have been stored as single sting where "::" indicated hierarchy levels) by a vector of strings where each element indicates a hierarchy level.
* introduced this change to the Storage method signatures, the ParseFunction and ParseVariable
* this way the SearchIndex creates a node for each level of the hierarchy.

src/lib/data/parser/ParseVariable.cpp

@@ -1,8 +1,15 @@
 #include "data/parser/ParseVariable.h"
 
-ParseVariable::ParseVariable(const ParseTypeUsage& type, const std::string& fullName, bool isStatic)
+#include "utility/utilityString.h"
+
+ParseVariable::ParseVariable(const ParseTypeUsage& type, const std::vector<std::string>& nameHierarchy, bool isStatic)
 	: type(type)
-	, fullName(fullName)
+	, nameHierarchy(nameHierarchy)
 	, isStatic(isStatic)
 {
 }
+
+std::string ParseVariable::getFullName() const
+{
+	return utility::join(nameHierarchy, "::");
+}