Various bugfixes and tweaks

- timed missions of all types should work.
- nanos now transmit an unsummon on 0 stamina.
- dying bumps your nanos down to half stamina now.
- enemies use abilities less frequently.
- group recall now works at any distance.
- passive nanos are tweaked to guzzle less stamina.
- cleared out some redundant stuff at the nanoPower handler.

src/MissionManager.cpp

@@ -110,7 +110,7 @@ void MissionManager::taskEnd(CNSocket* sock, CNPacketData* data) {
     if (missionData->iNPC_ID == 0) {
         TaskData* task = MissionManager::Tasks[missionData->iTaskNum];
         // double-checking
-        if (task->task["m_iHTaskType"] == 3) {
+        if (task->task["m_iSTGrantTimer"] > 0) {
             Player* plr = PlayerManager::getPlayer(sock);
             int failTaskID = task->task["m_iFOutgoingTask"];
             if (failTaskID != 0) {