Time to go, gumballs and nano potions (#113)

* set up "go to the time machine" button working

* warping to the past now sets PayZoneFlag and removes all active missions

* added gumballs functionality

* added nano potions functionality

* formatting fix

src/MissionManager.hpp

@@ -56,4 +56,5 @@ namespace MissionManager {
     void mobKilled(CNSocket *sock, int mobid);
 
     void saveMission(Player* player, int missionId);
+    void quitTask(CNSocket* sock, int32_t taskNum);
 }