Fix object event graphic names (#731)

* Fixed object event graphic names

* Updated files and other variable names

* Fix from finding and replacing without matching case

* spritesheet updates

* Update flag name

---------

Co-authored-by: Marcus Huderle <huderlem@gmail.com>

data/maps/TwoIsland/map.json

@@ -79,7 +79,7 @@
     },
     {
       "type": "object",
-      "graphics_id": "OBJ_EVENT_GFX_SUPER_NERD",
+      "graphics_id": "OBJ_EVENT_GFX_POKE_MANIAC",
       "x": 27,
       "y": 6,
       "elevation": 3,
@@ -88,8 +88,8 @@
       "movement_range_y": 1,
       "trainer_type": "TRAINER_TYPE_NONE",
       "trainer_sight_or_berry_tree_id": "0",
-      "script": "TwoIsland_EventScript_SuperNerd",
-      "flag": "FLAG_HIDE_TWO_ISLAND_SUPER_NERD"
+      "script": "TwoIsland_EventScript_PokeManiac",
+      "flag": "FLAG_HIDE_TWO_ISLAND_POKE_MANIAC"
     },
     {
       "type": "object",