Updated Citrine theme, plus some text changes

Pushing a commit for the less important stuff while I finish the Silph Gauntlet's missing floors.

- Swaps the Biker and Psychic in Silph Gauntlet around

- Increased J&J's Meowth's level to make it less unbalanced in the later fights

- Text improvements for Citrine City, Saffron Gym, and Viridian PokeMart

text/ViridianMart.asm

@@ -26,6 +26,7 @@ _ViridianMartText2::
 	done
 
 _ViridianMartText3::
-	text "No! POTIONs are"
-	line "all sold out."
+	text "The shop finally"
+	line "has some POTIONs"
+	cont "in stock."
 	done