Item Descriptions!

Added using this tutorial:
https://github.com/pret/pokered/wiki/Item-Descriptions
Credit to Rangi for the baseline code!

Updated Candy Sack -> Candy Jar as discussed a while ago too.

engine/menus/start_sub_menus.asm

@@ -337,11 +337,7 @@ StartMenu_Item::
 	call PlaceUnfilledArrowMenuCursor
 	xor a
 	ld [wMenuItemToSwap], a
-	ld a, [wcf91]
-	cp BICYCLE
-	jp z, .useOrTossItem
-.notBicycle1
-	ld a, USE_TOSS_MENU_TEMPLATE
+	ld a, USE_INFO_TOSS_MENU_TEMPLATE
 	ld [wTextBoxID], a
 	call DisplayTextBoxID
 	ld hl, wTopMenuItemY
@@ -352,7 +348,7 @@ StartMenu_Item::
 	xor a
 	ld [hli], a ; current menu item ID
 	inc hl
-	inc a ; a = 1
+	ld a, 2
 	ld [hli], a ; max menu item ID
 	ld a, A_BUTTON | B_BUTTON
 	ld [hli], a ; menu watched keys
@@ -368,21 +364,24 @@ StartMenu_Item::
 	ld [wd11e], a
 	call GetItemName
 	call CopyToStringBuffer
+	ld a, [wCurrentMenuItem]
+	cp a, 2
+	jr z, .tossItem
+	cp a, 1
+	jp z, .infoItem
+	; use item
 	ld a, [wcf91]
 	cp BICYCLE
-	jr nz, .notBicycle2
+	jr nz, .notBicycle
 	ld a, [wd732]
 	bit 5, a
 	jr z, .useItem_closeMenu
 	ld hl, CannotGetOffHereText
 	call PrintText
 	jp ItemMenuLoop
-.notBicycle2
-	ld a, [wCurrentMenuItem]
-	and a
-	jr nz, .tossItem
-; use item
-	ld [wPseudoItemID], a ; a must be 0 due to above conditional jump
+.notBicycle
+	xor a
+	ld [wPseudoItemID], a
 	ld a, [wcf91]
 	cp HM01
 	jr nc, .useItem_partyMenu
@@ -437,6 +436,9 @@ StartMenu_Item::
 	call TossItem
 .tossZeroItems
 	jp ItemMenuLoop
+.infoItem
+	farcall DisplayItemDescription
+	jp ItemMenuLoop
 
 CannotUseItemsHereText:
 	text_far _CannotUseItemsHereText