Fix: Fletching EXP corrections, 3a/infinity gear requirement corrections

- Fixed all shops that had an erroneous high_alch value
- fixed typo in BarrowsBoatPlugin (mispelling of Mort'ton)
- all Mystic Hats, and the Infinity Hat now hatflagged to resolve clipping issues
- 3rd Age Range equipment now have correct stat requirements (65 Ranged, 45 Defence)
- 3rd Age mage equipment now have correct stat requirements (65 Magic 30 Defence)
- Infinity robes now have correct stat requirements (50 Magic 25 Defence)

- Fletching EXP corrections:
- arrow shaft xp corrected 15 -> 5 xp
- tipping arrows with adamant arrowheads 10 -> 11.3 xp
- tipping arrows with broad arrowheads 10 -> 15 xp
- tipping bolts with opal tips 1.5 -> 1.6 xp
- tipping bolts with sapphire tips 4 -> 4.7 xp
- stringing yew shortbows 66 -> 67.5 xp

Server/data/configs/shops.json

@@ -55,7 +55,7 @@
   },
   {
     "npcs": "591",
-    "high_alch": "1",
+    "high_alch": "0",
     "currency": "995",
     "general_store": "true",
     "id": "7",
@@ -307,7 +307,7 @@
   },
   {
     "npcs": "516",
-    "high_alch": "1",
+    "high_alch": "0",
     "currency": "995",
     "general_store": "true",
     "id": "36",
@@ -316,7 +316,7 @@
   },
   {
     "npcs": "560",
-    "high_alch": "1",
+    "high_alch": "0",
     "currency": "995",
     "general_store": "true",
     "id": "37",
@@ -1963,7 +1963,7 @@
   },
   {
     "npcs": "2564",
-    "high_alch": "1",
+    "high_alch": "0",
     "currency": "995",
     "general_store": "false",
     "id": "222",
@@ -1981,7 +1981,7 @@
   },
   {
     "npcs": "578",
-    "high_alch": "1",
+    "high_alch": "0",
     "currency": "995",
     "general_store": "false",
     "id": "224",
@@ -2053,7 +2053,7 @@
   },
   {
     "npcs": "1282",
-    "high_alch": "1",
+    "high_alch": "0",
     "currency": "995",
     "general_store": "false",
     "id": "232",
@@ -2062,7 +2062,7 @@
   },
   {
     "npcs": "1315",
-    "high_alch": "1",
+    "high_alch": "0",
     "currency": "995",
     "general_store": "false",
     "id": "233",
@@ -2089,7 +2089,7 @@
   },
   {
     "npcs": "4856",
-    "high_alch": "1",
+    "high_alch": "0",
     "currency": "995",
     "general_store": "false",
     "id": "236",