Use {interpolation} to generate sequences of RAM labels

Fixes #319

engine/pokemon/add_mon.asm

@@ -348,7 +348,7 @@ _MoveMon::
 	ld hl, wDayCareMon
 	jr z, .findMonDataSrc
 	; else it's PARTY_TO_BOX
-	ld hl, wNumInBox
+	ld hl, wBoxCount
 	ld a, [hl]
 	cp MONS_PER_BOX
 	jr nz, .partyOrBoxNotFull
@@ -385,7 +385,7 @@ _MoveMon::
 	; if it's PARTY_TO_BOX
 	ld hl, wBoxMons
 	ld bc, wBoxMon2 - wBoxMon1 ; $21
-	ld a, [wNumInBox]
+	ld a, [wBoxCount]
 .addMonOffset
 	dec a
 	call AddNTimes
@@ -435,7 +435,7 @@ _MoveMon::
 	ld a, [wPartyCount]
 	jr nz, .addOToffset
 	ld hl, wBoxMonOT
-	ld a, [wNumInBox]
+	ld a, [wBoxCount]
 .addOToffset
 	dec a
 	call SkipFixedLengthTextEntries
@@ -466,7 +466,7 @@ _MoveMon::
 	ld a, [wPartyCount]
 	jr nz, .addNickOffset
 	ld hl, wBoxMonNicks
-	ld a, [wNumInBox]
+	ld a, [wBoxCount]
 .addNickOffset
 	dec a
 	call SkipFixedLengthTextEntries

engine/pokemon/bills_pc.asm

@@ -212,7 +212,7 @@ BillsPCDeposit:
 	call PrintText
 	jp BillsPCMenu
 .partyLargeEnough
-	ld a, [wNumInBox]
+	ld a, [wBoxCount]
 	cp MONS_PER_BOX
 	jr nz, .boxNotFull
 	ld hl, BoxFullText
@@ -254,7 +254,7 @@ BillsPCDeposit:
 	jp BillsPCMenu
 
 BillsPCWithdraw:
-	ld a, [wNumInBox]
+	ld a, [wBoxCount]
 	and a
 	jr nz, .boxNotEmpty
 	ld hl, NoMonText
@@ -268,7 +268,7 @@ BillsPCWithdraw:
 	call PrintText
 	jp BillsPCMenu
 .partyNotFull
-	ld hl, wNumInBox
+	ld hl, wBoxCount
 	call DisplayMonListMenu
 	jp c, BillsPCMenu
 	call DisplayDepositWithdrawMenu
@@ -291,14 +291,14 @@ BillsPCWithdraw:
 	jp BillsPCMenu
 
 BillsPCRelease:
-	ld a, [wNumInBox]
+	ld a, [wBoxCount]
 	and a
 	jr nz, .loop
 	ld hl, NoMonText
 	call PrintText
 	jp BillsPCMenu
 .loop
-	ld hl, wNumInBox
+	ld hl, wBoxCount
 	call DisplayMonListMenu
 	jp c, BillsPCMenu
 	ld hl, OnceReleasedText

engine/pokemon/remove_mon.asm

@@ -3,7 +3,7 @@ _RemovePokemon::
 	ld a, [wRemoveMonFromBox]
 	and a
 	jr z, .usePartyCount
-	ld hl, wNumInBox
+	ld hl, wBoxCount
 .usePartyCount
 	ld a, [hl]
 	dec a