Rename Roles (#452)

* Update CustomRoles.cs

* Update Flash.cs

* Update Main.cs

* Update CustomRolesHelper.cs

* Update ExtendedPlayerControl.cs

* Update PlayerGameOptionsSender.cs

* Update GameState.cs

* Update GuessManager.cs

* Update HudPatch.cs

* Update CustomRoleSelector.cs

* Update OptionHolder.cs

* Update en_US.json

* Update IntroPatch.cs

* Update en_US.json

CustomRoles.cs

@@ -428,7 +428,7 @@ public enum CustomRoles
     Wyrd,
 
     // Solo Kombat
-    SoloPVP_Player,
+    Challenger,
 
     // FFA
     Killer,
@@ -536,7 +536,7 @@ public enum CustomRoles
     Examiner,
     Facilitator, // Ghost role
     Finder,
-    Flashman,
+    Flash,
     Fragile,
     Fool,
     Giant,
@@ -603,4 +603,4 @@ public enum CustomRoles
     Watcher,
     Workhorse,
     Youtuber
-}
+}