Make apple regrowing frequency configurable independently of blossom

Conflicts:
	nature_classic/init.lua

nature_classic/blossom.lua

@@ -64,7 +64,7 @@ minetest.register_abm({
 -- spawn apples with 10% chance, but with 10 times higher frequency
 minetest.register_abm({
     nodenames = { nature.blossom_node },
-    interval = nature.blossom_delay / 10,
+    interval = nature.apple_delay / 10,
     chance = nature.apple_chance,
 
     action = function(pos, node, active_object_count, active_object_count_wider)

nature_classic/init.lua

@@ -23,6 +23,7 @@ end
 nature.leaves_blossom_chance = 15
 nature.blossom_leaves_chance = 5
 nature.blossom_delay = 3600
+nature.apple_delay = 3600
 nature.apple_chance = 10
 nature.apple_spread = 2