ui: search view autocompletion

- Implemented autocompletion for the QtSearchView.
- Added: MessageFinishedParsing that will be dispatched by the Project after the parsing step is done.
- Moved the initial MessageActivateToken from the Project to the Application.
- Added getNamesForNodesWithNamePrefix() to GraphAccess.

src/lib/utility/utilityString.cpp

@@ -23,4 +23,12 @@ namespace utility
 
 		return vec;
 	}
+
+	bool isPrefix(const std::string& prefix, const std::string& text)
+	{
+		typedef std::pair<std::string::const_iterator, std::string::const_iterator> ResType;
+		ResType res = std::mismatch(prefix.begin(), prefix.end(), text.begin());
+
+		return res.first == prefix.end();
+	}
 }