rewrite quest metadata indexing

- split ep3 download quests from quest index
- fix Ep3 NTE download quests
- automatically detect battle/challenge params and area remaps

system/quests/challenge-solo-ep1/c8811.json

@@ -1,5 +1,4 @@
 {
-  "ChallengeTemplateIndex": 0,
   "DescriptionFlag": 51,
   "AvailableIf": "V_NumPlayers == 2",
   "AllowStartFromChatCommand": true

system/quests/challenge-solo-ep1/c8812.json

@@ -1,5 +1,4 @@
 {
-  "ChallengeTemplateIndex": 1,
   "DescriptionFlag": 52,
   "AvailableIf": "V_NumPlayers == 2",
   "AllowStartFromChatCommand": true

system/quests/challenge-solo-ep1/c8813.json

@@ -1,5 +1,4 @@
 {
-  "ChallengeTemplateIndex": 2,
   "DescriptionFlag": 53,
   "AvailableIf": "V_NumPlayers == 2",
   "AllowStartFromChatCommand": true

system/quests/challenge-solo-ep1/c8814.json

@@ -1,5 +1,4 @@
 {
-  "ChallengeTemplateIndex": 3,
   "DescriptionFlag": 54,
   "AvailableIf": "V_NumPlayers == 2",
   "AllowStartFromChatCommand": true

system/quests/challenge-solo-ep1/c8815.json

@@ -1,5 +1,4 @@
 {
-  "ChallengeTemplateIndex": 4,
   "DescriptionFlag": 55,
   "AvailableIf": "V_NumPlayers == 2",
   "AllowStartFromChatCommand": true

system/quests/challenge-solo-ep1/c8816.json

@@ -1,5 +1,4 @@
 {
-  "ChallengeTemplateIndex": 5,
   "DescriptionFlag": 56,
   "AvailableIf": "V_NumPlayers == 2",
   "AllowStartFromChatCommand": true

system/quests/challenge-solo-ep1/c8817.json

@@ -1,5 +1,4 @@
 {
-  "ChallengeTemplateIndex": 6,
   "DescriptionFlag": 57,
   "AvailableIf": "V_NumPlayers == 2",
   "AllowStartFromChatCommand": true

system/quests/challenge-solo-ep1/c8818.json

@@ -1,5 +1,4 @@
 {
-  "ChallengeTemplateIndex": 7,
   "DescriptionFlag": 58,
   "AvailableIf": "V_NumPlayers == 2",
   "AllowStartFromChatCommand": true

system/quests/challenge-solo-ep1/c8819.json

@@ -1,5 +1,4 @@
 {
-  "ChallengeTemplateIndex": 8,
   "DescriptionFlag": 59,
   "AvailableIf": "V_NumPlayers == 2",
   "AllowStartFromChatCommand": true