Craftguide: Use better tooltips for group buttons

locale/template.txt

@@ -60,6 +60,10 @@ Show previous recipe =
 Show previous usage = 
 # Shown for huge crafting recipes; try to keep the line length short and use multiple line breaks as needed
 This recipe is too\nlarge to be displayed. = 
+# %s = group name (e.g. wool)
+Any item belonging to the %s group = 
+# %s = List of “and”-concatenated group names
+Any item belonging to the groups %s =
 Recipe %d of %d = 
 Usage %d of %d = 
 No recipes =
@@ -74,6 +78,10 @@ Clear inventory =
 Give me: =
 To craft grid: =
 
+### group.lua ###
+# Logical connective, example: “Any item belonging to the groups foo and bar”
+\sand\s = 
+
 ### waypoints.lua ###
 White = 
 Yellow =