src: miscellaneous bug fixes for upcoming release

* only randomize parsing order of source files for multithreaded indexing
* fixed overview not displayed when switching projects due to MessageScrollCode being dispatched
* avoid adding duplicate TokenLocations that causes highlighting to break in QtCodeArea
* clear all controllers when switching project
* maximize unindexed file when clicking title instead of activating it

src/lib/component/controller/IDECommunicationController.h

@@ -20,6 +20,8 @@ public:
 	IDECommunicationController(StorageAccess* storageAccess);
 	virtual ~IDECommunicationController();
 
+	virtual void clear();
+
 	void handleIncomingMessage(const std::string& message);
 
 	bool getEnabled() const;