Feature/globals handling (#1352)

* Cleaner handling of global state
* Prevent Lua memory corruption (closes #982)
* Initialize glfw first thing to prevent weird joystick loading bug during startup

modules/server/include/topics/topic.h

@@ -44,7 +44,7 @@ public:
     virtual bool isDone() const = 0;
 
 protected:
-    size_t _topicId;
+    size_t _topicId = 0;
     Connection* _connection;
 };