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/data/access/GraphAccess.h

@@ -2,6 +2,7 @@
 #define GRAPH_ACCESS_H
 
 #include <string>
+#include <vector>
 
 #include "utility/types.h"
 
@@ -14,6 +15,7 @@ public:
 
 	virtual Id getIdForNodeWithName(const std::string& name) const = 0;
 	virtual std::string getNameForNodeWithId(Id id) const = 0;
+	virtual std::vector<std::string> getNamesForNodesWithNamePrefix(const std::string& prefix) const = 0;
 };