Myriad of changes!

This is a pretty hefty commit, so let's break it down.
- Fixes Pokedex entries for Bittybat, Bulbasaur, and Shellder.
- ...presumably fixes the options menu.
- Adds a Fishing Group and water wild data to Diglett's Cave, also reduces the encounter rate. More to come.
- Modifies parties, including evolving Rival 2's starter.
- Attempts to fix the Ultra and Safari Balls by making `BallFactor` 4, which appears to be the intended number. Tests yielded positive results.
- Restores a ton of Japanese references that got removed in localisation, including some errors.

text/SafariZoneCenterRestHouse.asm

@@ -1,7 +1,9 @@
 _SafariZoneRestHouse1Text1::
-	text "SARA: Where did"
-	line "my boy friend,"
-	cont "ERIK, go?"
+	text "ATSUKO: Where did" ; JP elements restored, cut "boyfriend" line which was a translation change.
+	line "KOJI go?"
+	
+	para "He said to meet"
+	line "him here..."
 	done
 
 _SafariZoneRestHouse1Text2::